植物研究雑誌 J. J. Jpn. Bo t. 72: 72: 198-220 (1 997)

Dalbergia Dalbergia (Leguminosae) of Borneo

Bambang SUNARNO a and Hiroyoshi OHASHl b

aHerbarium aHerbarium Bogoriense ，Bogor ，INDONESIA; bBiological bBiological Institute ，Graduate School of Science ， Tohoku University ，Sendai 980-77 ，JAPAN (Received (Received on February 12 ， 1997)

Twenty one species of Dalbergia are recognized in Bomeo including four new species species and three newly recorded species. The new species are D. bintuluensis Sunamo & H. Ohashi found in ， D. kostermansii Sunamo & H. Ohashi in Kalimantan and Sarawak ， D. richardsii Sunamo & H. Ohashi in Sarawak ， and D. sandakanensis Sunamo & H. Ohashi in . Three species new to Bomeo are D. canescens Merrill and D. mimosella mimosella (Blanco) Prain ， both previously known in the Philippines ，andD. hullettii Prain in in Singapore. Dalbergia phyllanthoides Blume ex Miq. is regarded to be a new synonym of of D. junghuhnii Benth. Of the 21 species following eight (38% for total species of Dalbergia Dalbergia in Bomeo) are endemic to Borneo ，i. e. ， D. bintuluensis ， D. borneensis ， D. falcata ， D. havilandii ， D. hoseana ， D. kostermansii ， D. richardsii ，andD. sandakanensis. A key to all the species and an enumeration of species with their correct names ，synonyms ， bibliography ，distribution ，habitat and ecology ， vemacular names ， a list of specimens examined ， and taxonomic notes are presented.

Introduction gapore are included. Two species recorded by Prain Prain (1901 ， 1904) recorded 14 species of Merrill (1 921) from Borneo ， i. e. ，D. Dalbergia from Bomeo (Tab. 1) ， of which simplicifolia and D. subalternifolia ， are re- five ，i.e. ，D. beccarii ，D. borneensis ，D .f alcata ， duced to synonyms of D. rostrata as treated in D. havilandii ，and D. hoseana ， are thought to ourprevious paper (Sunamo and Ohashi 1996). be endemic to this fsland. This is the only Dalbergia phyllanthoides Blume ex Miq. is comprehensive work on Dalbergia ofBomeo. regarded here to be a new synonym of D. Merrill Merrill (1921) added two species including junghuhnii Benth. one new species. At present ， these 16 species Of the 21 species eight are endemic to are are known to occur in Bomeo ，but ，studies on Bomeo (38% for total species of Dalbergia in the the genus of Bomeo are still incomplete. In Bomeo). Comparing the present result with this this study 21 species (Tab. 1) are recognized our previous work on Dalbergia of Sulawesi ， based mainly on examination of herbarium where seven species are recorded including specimens accumulated mostly in BO ，K ，and one endemic species ，D. teijsmannii ，(14% for L. L. Four new species ，i. e. ，D. bintuluensis ，D. total species) ，Borneo is distinctly richer than kostermansii ， D. richardsii and D. Sulawesi in total number of species ，endemic sandakanensis ，and three species newly found species ，and ratio of endemic species to total from Borneo of which two have been known in species. Species common to both islands are the the Philippines ，i. e. ，D. canescens and D. six (Dalbergia candenatensis ，D. discolor ，D. mimosell α，and one ，D. hullettii Prain ， in Sin- ferruginea ，D. rostrata ，D. pinn αta ，and D.

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Table Table 1. Dalbergia of Bomeo recognized by Prain (1904) and the present study study

Prain Prain (1904) Present study (*Endemic species)

1. 1. D. becc αrii 1. D. beccarii Prain 2. 2. D. bintuluensis Sunamo & H. Ohashi* 2. 2. D. borneensis 3. D. borneensis Prain* 13. 13. D. torta → 4. D. candenatensis (Denns t.) Prain 5. 5. D. canescens (Elmer) Merrill 3. 3. D. discolor 6. D. discolor Blume ex Miq. 4. 4. D.falca ω 7. D.falc αωPrain* 5. 5. D.j 訟rruginea 8. D. 戸rrugin ωRoxb. 6. 6. D. havilandii 9. D. havilandii Prain* 7. 7. D. hoseana 10. D. hoseana Prain* 11. 11. D. hullettii Prain 9. 9. D. phyllanthoides → 12. D. junghuhnii Benth. 13. 13. D. kostermansii Sunamo & H. Ohashi* 14. 14. D. mimosell α(Blanco) Prain 8. 8. D. parviflor α= 15. D. parviflora Roxb. 12. 12. D. tamarindifolia → 16. D. pinnata (Lour.) Prain 17. 17. D. richardsii Sunamo & H. Ohashi* 10. 10. D. rostrata = 18. D. rostrata hassk. 19. 19. D. sandakanensisSunamo&H. Ohashi* 11. 11. D. scortechinii = 20. D. scortechinii (Prain) Prain 14. 14. D. velutina = 2 1. D. velutina Benth.

mimosella). mimosella). 3. Stipules caducous even on young branches In In this paper ，Bomeo ， following Hollis and …7 Brummitt (1 992) ，is divided into four regions 4. Leaflets 5-9(-11) ， obtuse at apex ，mem- as as Brunei ，Kalimantan (=Indonesian Bomeo) ， branous; petiolules 5-8 mm long … .. Sabah ，and Sarawak for distribution and cit~­ .. 3. D. borneensis tion tion of specimens examined. Specimens ex- 4. Leaflets 9-25( -4 1) ，emarginate ，mucro- amined in this study are kept in A & GH ，BO ， nulate or not at apex ， chartaceous to K ，KEP ，L ，MO ，OXF ，and TUS. coriaceous; lateral ones oblique at base;

petiolules petiolules 0.5-2 mm long ....・ H ・.....・ H ・-… 5 Key to the species 5. Leaflets 25 -4 1，10-20 mm long; mucro- 1. 1. Leafless when flowering .11. D. hullettu nulate at apex; petiolules 0.5-1 mm long;

1. 1. Leaves present when flowering …...・ H ・..2 lateral nerves 6-7 pairs .… 16. D. pinnata 2. 2. Leaflets small ， usually less than 3.5 cm 5. Leaflets 9-25 ，20 -4 5(-50) mm long; ob-

long long ...・ H ・H ・H ・.....・ H ・.....・ H ・.....・ H ・..……...・ ...3 tuse or emarginate at apex; petiolules 1-5 2. 2. Leaflets medium to relatively large ，usu- mm long; lateral nerves 7-15 pairs. …… 6

ally ally more than 4.5 cm long ・… H ・H ・...・ ...12 6. Leaflets emarginate at apex; petiolules 3. 3. Stipules persistent to subpersistent on old usually less than 2 mm long; nerves usu-

branches branches …...・ H ・.....・ H ・H ・H ・.....・ H ・.....・ H ・..… 4 al1 y less than 10 pairs; climbers.... 200 200 植物研究雑誌第72 巻第4号 平成 9年8月

-…… 8. D .ferruginea 13. Leaves mostly with 3-5(-7) leaflets or 6. 6. Leaflets obtuse at apex; petiolules usually sometimes mixed with unifoliolate leaves more than 2 mm long; lateral nerves usu- .14

ally ally more than 10 pairs; trees …....・ H ・... 13. Leaflets mostly 5-9 ，sometimes 3 or 11

…… 14. D. mimosella ・・ H ・H ・-・・ 18

7. 7. Stipules broadly falcate. Pods entirely 14. Leaflets always 3-5 ，rarely 7 ....・ H ・-… ..15 thickened ，slightly reniform . 14. Leaflets usually 3-5 but sometimes with

.. .. 1. D. beccarii unifoliolate leaves ...・ H ・.....・ H ・..…...・ H ・...17 7. 7. Stipules suborbicular ，ovate ，triangular 15. Leaflets large ， usually more than 5 cm

ovate ovate or lanceolate. Pods samaroid... ・...8 long ， acute at apex; petioles 2-3 cm long 8. 8. Leaflets hairy on both surfaces ， densely ..18. D. richardsii 15. 15. Leaflets smaller ， usually less than 5 cm tomentose tomentose beneath ...・ H ・-…....・ H ・..… H ・H ・..9 8. 8. Leaflets glabrous or hairy along the midrib long ，cuspidate at apex; petioles up to 2 cm

above ， appressed short hairy beneath .…・ long ...・ H ・H ・H ・..…...・ H ・-….，.・ H ・.....・ H ・...・ H ・.16 … .11 16. Leaflets 5-7 ，apex mucro-nulate. Pods 9. 9. Leaflets 20-30 mm long; lateral nerves 6- foveolate in mature ，3-4 cm long ，2-3 cm pairs. 9 pairs. Stipules ovate to lanceolate ，5-10 wide ， base decurrent ….. ...・ ...13. D. kostermansii mm long.... ・H ・....・ H ・....・ H ・.5. D. canescens 9. 9. Leaflets 10-20 mm long; lateral nerves 16. Leaflets 3-5 ， apex not mucronulate. Pods inconspicuous. inconspicuous. Stipules suborbicular or alveolate in mature ，5-6 cm long ，3-4 cm triangular triangular ovate ，smaller ，usually less than wide ， base not decurrent .… ・・ - … 2. D. bintuluensis 5 mm long ...・ H ・..…...・ H ・.，.・ H ・-… H ・H ・...・ ...10 10. 10. Leaflets 9-11(-13) ， greenish when dry ， 17. Leaflets apiculate ， acuminate or some- 10-15 mm long; apex with a tuft of hairs times acute at apex ，brown when dry …・・ at at top. Stipules triangular ovate ，acumi- … 9. D. havilandii nate ，ca. 2.5 mm long ，2 mm wide. … ・・ .. 17. Leaflets slightly cuspidate or rostrate at ..10. ..10. D. hoseana apex ， dark reddish brown or blackish when

10. 10. Leaflets 11-17 ，blackish brown when dry ， dry ....・ H ・....・ H ・...・ H ・-…...・ H ・.17. D. rostrat α， 18-20 mm long; apex without a tuft of 18. Leaves 3-8 cm long; lateral nerves 4-6 hairs. hairs. Stipules suborbicular ，acute ， ca. 1 pairs. In the vicinity of mangrove vegeta- tion ，on the beach or in the bank of tidal mm long ， 0.5-0.8 mm wide ...・ H ・

..19. ..19. D. sandak α， nensis river ...・ H ・...・ H ・....・ H ・...4. D. canden αtensis 11. 11. Terminalleaflets glabrous above ， oblique 18. Leaves 10-25 cm long ，lateral nerves 5- at at base. Flowers 3-4 mm long. Standard 11 pairs. In lowland to hill forests .… ..19 obovate ， 3-3.5 mm longI2.D.junghuhnii 19. Petioles 4- 10 cm long; lateral nerves 5-7

11. 11. Terminalleaflets sparsely to densely hairy pairs. Flowers large ，8-9 mm long ....・ H ・- along along the midrib above ， equal to base. -… ..7. D.falcata Flowers Flowers 2.5-3 mm long. Standard orbicu- 19. Petioles 2--4 cm long; lateral nerves 7-11 pairs. pairs. Flowers small ， 3-3.5 mm long..20 lar ， 2.5-2.8 mm long ...・ H ・....・ H ・-… H ・H ・-….. …… 20. D. scortechinii 20. Leaves 15-25 cm long. Leaflets oblong ， 12. 12. Leaflets 13-17. Stipules large ，15-20 cm sometimes ovate to slightly obovate. Pods entirel entirel y thickened ，surface torulose ，black- long long ...・ H ・...・ H ・....・ H ・...・ H ・-… 21. D. velutina

12. 12. Leaflets 3-1 1. Stipules smaller ， usually ish brown to black when dry ....・ H ・.. … 16. D. parviflora less less than 10 mm long ....・ H ・...・ H ・.....・ H ・..13 August 1997 Jouma1 of Japanese Botany Vo l. 72 No. 4 201

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Fig. Fig. 1. Dalbergia bintuluensis Sunarno & H. Ohashi. A. Branch with mature fruits. B. B. Fruit ， C. Adaxial view offrui t. Voucher: Il yas Paie S. 15593 ，holotype.

20. 20. Leaves 5-10 cm long. Leaflets sub- Enumeration of Dalbergia in Borneo orbicular ， sometimes obovate elliptic. Pods 1. Dalbergia beccarii Prain in J. Asia t. Soc. samaroid ，p ぽ tly thickened on seeds ，sur- Beng. 70 (2): 64 (1 901) ，& in Ann. Roy. Bo t. face face smooth and obscure reticulation .…・ Gard. Calc.l0: 33 ，t. 6A (1 904); Verdc. ，Man.

...・ H ・-….. 6. D. discolor New Guin. Leg. 293 (1 979). Type: Borneo ， Sarawak. fr.， Nov. 1871 (Beccari 566 ， Lectotype Lectotype designated here: K). 202 202 植物研究雑誌第72 巻第4号 平成9年8月

D. insularis Pulle in Lorentz ，N ov. Guin. 8: 15593 ， Holo-: L ， photo TUS; Iso-: BO ， K). 377 (1 910). Type: New Guinea. lrian Jaya ， A woody climber; young branches slender ，

Bivak. Bivak. fl. & fr. ， 13 July 1907 (Versteeg 1117 striate ，glabrous or sparsely puberulent ，with 国 Holo-: Holo-: L; Iso-: BO ， K). out lenticels. Stipules caducous. Leaves 3-5- D. novo-guinensis Merr. & Perry in J. Am. foliolate ，9-13 cm long ， the axis more or less Arb. Arb. 23: 402 (1942). Type: PapuaNewGuinea ， zigzag; petioles 0.8-1.0 cm long ，inconspicu- Maira ， Vailala river. fl. &仕.， 21 Feb. 1926 ously striate ，glabrous; rachis 0.7-2 cm long ， (Brass (Brass 1031 ， Holo-: A; Iso-: L ， K). glabrous. Leaflets coriaceous ， ovate to Distribution: Distribution: Borneo (Brunei ， Kalimantan broad1y ovate ，2.5 -4 cm long and 1.2-2.5 cm and and Sarawak) (Fig. 3A). New Guinea ，and broad ， obtuse or rounded at base ，more or less Peninsular Peninsular . cuspidate at apex but slightly retuse at very Habitat Habitat and ecology: Usually in swampy top; dark brown ，glabrous ， dull or slightly forests forests along river ， margin of monsoon forests glossy on upper surface; paler ，sparsely ad- on river banks ， or in beach forests; 0 to 30 m in dressed puberulent or glabrous on lower sur- altitude. altitude. Flowering February to July; fruiting face; midrib prominent beneath ，lateral nerves February February to Novembe r. 4-6 pairs; petiolules 2-3 mm long ，glabrous.

Field Field notes: Erect or scandent shrubs or Inflorescences not known. Infructescens ter 闇 lianas. lianas. Main stems are reported sometimes minal and axillary ，compound paniculate ，8- with with long thoms (Prain 1904). 11 cm long; peduncles 4- 5 cm long ，striate ， Specimens examined: glabrous; rachis ca. 3 cm long ，striate; bracts Brunei. Brunei. Seria Belait ，on the shore. fl. & young fr.， June (van persistent ，ovate ca. 1.0 mm long. Pods broadly Nie14014 ， L). Kalimantan. Sungai Sambas. fr.， 1893/1894 (Hallier 1069 ， oblong ，5-6 cm long ，3 -4 cm wide ，blackish BO ， L); Sungai Landak ，Kapuas (Teijsmann s.n. ，BO). brown ，slightly glossy ，conspicuously alveo- Sarawak ，unknown exact locality. 仕.， Nov. (Beccari 566 ， late on lateral surfaces; stipes ca. 3 mm long. Lectotype: Lectotype: K); (Beccari 1105 ， K); S. Segan . fr. ，Oc t. (Anderson S-18580 ，K ， L). Distribution: Endemic to Borneo (Sarawak). 2. 2. Dalbergia bintuluensis Sunamo & H. (Fig.2) Ohashi ，sp. nov. (Fig. 1). Habitat and ecology: Known only the type Differt Differt haec species a D. albertisii Prain specimen. Climbing on Dryobalanops in a foliis foliis 3-5-foliolatis (vs. 5-9-foliolatis in D. primary fores t. albertisii) albertisii) foliolis plus minusve cuspidatis et Taxonomic notes: The new species is simi- leviter leviter retusis ad apicem leguminibus late lar to Dalbergia albertisii Prain from New oblongis oblongis 5-6 cm longis alveolatis ，a D. Guinea in having compound panicles and en- kostermansii kostermansii Sunamo & H. Ohashi foliis 3-5- tirely thickened pods ， but Is distinguished by foliolatis foliolatis (vs. 5-7 -foliolatis inD. kostermansii) its 3-5-foliolate leaves (against 8-9-foliolate foliolis foliolis apice mucronulatis leguminibus inD.α lbertisii) ， and larger pods (against 5-6 longioribus longioribus alveolatis. x3 -4 cm large against 2.5 -4 x ca. 2 cm large in in D. αlbertisii) with distinctively alveolate Liana Liana ligna. Folia 3-5 叩 foliolata ，foliola elliptica elliptica vellate ovata ，25 -4 0 mm longa ，12- s urfaces (against finely reticulate in D. 25 mm lata ， subtus sparse puberula vel glabra ， albertisii). Also ， the new species is similar to infructescentiae infructescentiae compositae paniculatae 8-11 D. kostermansii ，a new species described in cm longae. Legumina late oblonga 5-6 cm this paper ， in leaflets ， but they differ in leaves longa longa 3-4 cm lata conspicua alveolata. and pods which will be pointed out in the note Type: Type: Bomeo. Sarawa k. Segan Forest Re- under the latter species. For detailed compari- serve ，Bintulu. fr.， Nov. 1961 (Il yas Paie S. son between these three species are shown in August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 203

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Fig. Fig. 2. Distribution map of four new species of Dalbergia. D. bintuluensis bintuluensis (*)， D. kostermansii (・)， D. richardsii (・)， and and D. sandakanensis (企).

Table Table 2. 4. Dalbergia candenatensis (Denns t.) Prain 3. 3. Dalbergia borneensis Prain in J. Asia t. in J. Asia t. Soc. Beng. 70 (2): 49 (1 90 1); Soc. Soc. Beng. 70 (2): 44 (1 901) ，& in Ann. Roy. Thothathri ， Tax. Rev. Dalbergieae Ind. 187 Bo t. Gard. Calc. 10: 75 ，t. 57 (1 904). Type: (1 987); Sunamo & Ohashi in J. Jpn. Bo t. 71: Bomeo ，Sarawak ， (Haviland 2889 ， 243 (1 996). Holo-: Holo-: K; Iso-: L). Distribution: India to South China and to Distribution. Distribution. Endemic to Borneo (Sarawak) North Australia through Malesia. In Malesia ， (Fig.3A). (Fig.3A). Borneo (Brunei ， East Kalimantan ，Sabah ，and Habitat Habitat and ecology: In secondary lowland Sarawak) (Fig. 3B) ，andMalay Peninsulaeast- heat heat forests or sometimes in sandstone hill wards to New Guinea ，Solomon Is 1.， New forests. forests. Flowering and fruiting probably in Caledonia and F討 iIslands. March to Augus t. Habitat and ecology: See Sunarno and Field Field notes: Scandent shrubs or lianas up to Ohashi in J. Jpn. Bo t. 71: 243 (1 996). 5m high. Inflorescences and new shoots with Vemacular names: Tuba-tuba or Kalong flush flush of leaves appear simultaneously. This (Dyak ，Brune i). habit habit is similar to that of Dalbergia ve/ utina Specimens examined: Benth. Benth. Calyx green ，corolla white ，and style BruneI. Kp. ，Mempaku l. fl. ， July 1932 (Goklin BNB-1965 ，BO ，K ，OXF); Telisai bridge ，Tutong distric t.日.， white. white. May (van Niel 3924 ， L); Telisai river. 日.， July (van Nie14187 ， Taxonomic notes: Prain (1 901) described L). the the ovary is glabrous except the stipe ， but the Kalimantan. Nunukan ， Sungei Simengkadu ，North of Tarakan. Tarakan. fl. & young fr. ，Nov.-Dec. 1953 (M 吋er2376 ，BO ，L). type type sepcimen has finely puberulous pistils. Sabah. Pulau Bahagan ， Distric t.日.， July (Madan Dalbergia borneensis seems to be close to D. SAN 90770 ， K); Sepilok Forest Reserve ，Elopura ， . velutina velutina Benth. fl. ， Dec. (John BNB A 司 639 ， K); NearT.B. Wardmiles 2，Labuk road. 日.， June (Pimtu SAN 5684 ， K); Jalan Pangkalan ， Sepilok Specimens examined: Fo r. Res. fl. ，Aug. (Patrick SAN 65650 ，K ， L). Sarawak. Batang. 仕.， Ap r. (lkooke 8306 ， L); Kuching. 日.， Sarawak ，no exact locality (Beccari 2126 ， K); Kp. Li kas ， March and fr.， Apr. 1893 (Haviland 2889 ，Type ，K ， L); Bintulu ， Inaman. fl. ， July (BNB 1993 ，BO ， K); Bintulu ，Kalong. 日.， Ap r. Kalong. 日.， Ap r. 1893 (Haviland 2890 ，K ， L); M t. Dulit ，Ul u (Haviland 2892 ，BM ，BO ，K ， L); Kampung Puah ， ， in Ti 吋ar ， near Kapa ， IVth Div. ，in a secondary forest ， under 300 m secondary forests. 日.， Sep t. (Purseglove & M. Shah 4633 ，K ，L). altitude. 日.， Aug. 1932 (Richards 1215 ，K ， L); Beyond uplands ， 5. Dalbergia canescens (Elmer) Merrill ， 3 miles south of Kuching ， secondary forest on degraded soi l. fl ， March (Anderson S-23492 ，K ， L). Enum. Phi l. Fl. Pl. 2: 295 (1 923). 204 204 植物研究雑誌第72 巻第4号 平成9年8月

Table Table 2. Comparative morphology of Dalbergia albertisii ，D. bintuluensis ， and D. kostermansii

Speciesl Speciesl D. bintuluensis Sunamo & D. kostermansii Sunamo & albertisii D. albertisii Prain Characters Characters H. Ohashi H. Ohashi

Leaf Leaf 5-9- foliolate 3-5-foliolate 5-7-foliolate

Leaflet Leaflet Iovate ，na 町 owly oblong to ovate to broadly ovate ， oblong ，acute at apex; cuspidate at apex; lateral lateral nerves I 10-13 pairs 4-6 pairs 5-7 pairs

Bracteole Bracteole I caducous perslstent

Fl ower I 3.5 -4 .5 mm long ca. 3 mm long cucuuasa2mmNVmltlkohOnenagIg Calyx Calyx I 2一2.5 mm lon liめ ・ σ m 侃 ∞ A rσbx2An entirely entirely glabrous; む 叫 且戸し 1ωm lowest lowest tωO ∞O叫th 川I cωa. 1.5 mm long ， d 泊 氾 印刷川 う はPA acummate at apex H

bcra0M0 'r.om 加唱、.，，・・ d 町 S削紅d lo 伽 g to s帥吋; 叫∞ 司、m g 1 claw claw I 0.7-0.8 mm long U

4:・b74bmmw Wing narrowly oblong ， 勺 '， --園、」。mmEoonnσbσb 2-2.5 2-2.5 mm long; va 且 EEi claw claw 0.7-0.8 mm long na-

Keel-petal Keel-petal boat shaped ， subovate ， 2-2.5 2-2.5 mm long; ca. 1. 8 mm long; claw claw I 0.6-0.7 mm long ca. 0.4 mm long

Pistil Pistil 1.5-1.6 mm long; ovary ovary I glabrous except on both sparsely hairy sutures sutures

hu 創 制 LU LU.， -M 伽 '・・hu'EE m5ucv vdre(no onenσbσb. P3U OVI nLu 削 OCpL'EAA凶-dqVJ-O onσb Pod elliptic to suborbicular ， EA Anu- 且 6A h 3司 4smmMoh ， 一円 ca. ca. 1.5 cm long; 》 加 町 lateral lateral surface I finely reticulate 副 川

Derris Derris canescens Elmer in Leafl. Phi l. Bo t. up to 1000 m. Flowering in June ，July ，and 8: 8: 3087 (1919). Type: Philippine. Luzon. M t. September; fruiting in Septembe r. Maquiling ，Los Banos ，Laguna. 日.， June-July ， Field notes: A large and quite strong woody 1917 (A.D.E. Elmer 17883 ，Iso-: BO). climber. Flowers sometimes white with purple Distribution: Distribution: Borneo (Sabah: M t. Kinabalu) spots. (Fig. (Fig. 3B) and the Phiilippines. Taxonomic notes: This species is similar to Habitat Habitat and ecoltgy: A mountain forest Dalbergia hoseana Prain andD. sandakanensis species. species. Usually in foothill forests at altitude Sunamo & H. Ohashi ，a new species described August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 205

A 。

D

Fig. Fig. 3. Distribution maps of Dalbergia in Borneo 1. (A): D. beccarii beccarii (・) and D. borneensis (*)， (B): D. c αndenatensis (・) and D. canescens (女)， (C): D. dis ω lor ( ・) and D falca ω(*) ， (D): D.ferruginea (・)， D. havilandii (肯)， D. hoseana hoseana (*)， and D. mimosella (0).

in in this paper (Tab. 4). Ipil Baram ， Pulingi (Dusun). Specimens examined: Specimens examined: Sabah. Mt. Kinabalu ，Da l1 as ， via Duran at 1000 m in Borneo ，no exact locality (Korthals s.n. HLB. 908. 114- altitude. altitude. fl. ， Sept. 1931 (J. & M. S. Clernens 26265 ，BO ，K) ，fl. ， 1439 ，L) ， (Korthals s.n. HLB 908. 114-1423 ， L). Sept. Sept. 1931 (J. & M. S. Clemens 26439 ，BO ，K ， L); M t. Kinabalu ， Kalimantan. Gn. Pamatton (Korthals s.n. HLB 908. 114- via via Duran at 1000 m altitude. fr.， Sep t. 1931 (J. & M. S. Clemens 1433 L); Along Mahakam river ，WestKutei. fl. & youngf r.， July 26507 ，BM ，BO ， K). 1925 (Endert 1448 ，' BO ， L); 5 km by Labuhan ，West Kutei. fr.， 6. 6. Dalbergia discolor Blume ex Miq. ， F l. Aug. 1925 (Endert 1893 ，BO ， L). Sei Gosong Mas. 日.， Sep t. 1930 1930 (Haring b.b. 14499 ，BO ， L); Amuntai. (J enar b.b. 18673 ， Ind. Ind. Ba t. 1: 130 (1 855); Sunamo & Ohashi in BO ， L); Pleihari ，Djilatan. (Kaderi b.b. 19257 ，BO ， L); Pleihari ， J. J. Jpn. Bo t. 71: 243 (1 996). Djilatan. 日.， Oc t. 1934 (Kaderi b.b. 19258 ，BO ， L). Distribution: Distribution: Borneo (Kalimantan and Sabah. ， in swampy area. fr. ，Aug. (Umbol NBFD 5404 ，K ， L); Jalan Ulu Tomani ，Tomani ， district (Rundi Sabah) Sabah) (Fig. 3C) ，Sulawesi ，and the Philip- SAN 43191 ， K); Mile 87.5 ，Hap Seng loggingarea ，. fl. pmes. pmes. bud ， July (Leopold & Toha SAN 83596 ，K ，KEP ， L); Kampung Habitat Habitat and ecology: See Sunamo & Ohashi Mausaralong ， mile 56.5 ，Tambunan distric t. fr.， Aug. (Abas SAN 85910 ，K ，KEP ， L); Sungei Tilid ，2 miles from Ulu in in J. Jpn. Bo t. 71: 243 (1 996). Tomani ，Ten Sun. fr. ， July (Madani SAN 97057 ，K， L); Ulu Vemacular names. Belangan (Indonesian); Temani ，Tenom. 仕.， July (Sundalin SAN 80091 ，K ，KEP ， L); Sambustelat Sambustelat (Dyak); Tada ，Akar lakka (Kutei); Kitau ，Keningan district ， side ofTambunan ，Keningan road. fr.， 206 植物研究雑誌第72 巻第4号 平成9年8月

b

A B

。 ρ

D

Fig.4. Fig.4. Distribution maps of Dalbergia in Borneo 2. (A): D. hulletti hulletti (・) and D.junghuhnii (*)， (B): D. par νifl Ol ・a( ・) and D. pinnata (*)， (C): D. 1・ostra ω( ・)， and (D): D. scortechinii (・) and D. velutina (女).

Sep t. (Amin SAN 95460 ，K ，L); Kpg. Kapuakan ，Lubut ，Sugu t. subcoriaceous ，rounded at base ，abruptly acu- young fI ・.， Apr. (Aban & DewoI SAN 96629 ，K ， L). minate at apex; petiolules 5-8 mm long; lateral 7. 7. Dalbergia falcata Prain in J. Asia t. Soc. main nerves 5-7 in each half-leafle t. Inflores- Beng. 70 (2): 65 (1 901) ，& in Ann. Roy. Bo t. cences axillary paniculate ， 4-7.5 cm long; Gard. Gard. Calc. 10: 104 (1 904). Type: Bomeo. peduncles 1-4 cm long ，puberulent; branches Sarawak: Sarawak: Bintulu. fr.， 1865-1868 (Beccari puberulous; bracts lanceolate ca. 2 mm long ， 4027 ， Holo-: K) (Fig. 5). caducous; bracteoles lanceolate ， ca. 1 mm Woody climbers ，up to 6 m tall ， stems long ，pubescent ， early caducous. Flowers 8-9 angular ， blackish to grayish brown ， rusty pu- mm long; pedicels 1-2 mm long ， densely rusty bescent; bescent; stipules triangular to lanceolate ，ca. 3 pubescen t. Calyx bell-shaped ，3 -4 mm long ， mm Iong ， ca. 1 mm wide ， rusty pubescent ， densely rusty pubescent ， tube ca. 2 mm long; early early caducous. Leayes 5-9-foliolate ，10-20 the lowest lobe acuminate ， ca. 2 mm long ， cm long ，petioles 4-10 cm long ，rachis 6-10 edges of the lobes with glandular hairs. Stand- cm long. Leaflets ovate ， 5-7.5 cm long ，2-3 ard reflexed; the blade orbicular ，5-6 by 5-6 cm wide; dark green and glabrous above ，paler mm large ， subhastate at base ，broadly and finely appressed pubescent beneath; emarginate at apex ，reticulately veined; the August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 207

Fig.5. Fig.5. Dalbergiafalcata Prain. A. Fl owering branch ， B. Fl ower ， C. Pod (l ateral surface) ， D. Pod (transverse section) ， E. Petals ，F. Connate stamens ， G. Calyx opened ， H. Pisti l. Voucher: A-B ，E-H Ashton BRUN 5556; C-D Hallier 1170.

claw ca. 1. 5 mm long ・Wings: the blade ob- 1. 5-2 mm long. Keels: the blade boat-shaped ， long ，slightly falcate ，ca. 5 by 3-3.5 mm large ， ca. 3 by ca. 4 mm large ，bluntly obtuse at apex; rounded or bluntly obtuse at apex; the claw the claw 1.5-2 mm long. Stamens 10 ， 208 植物研究雑誌第72 巻第4号 平成 9年8月 monadelphous but the vexillary one soon be- There are ，however ，three collections are known coming free; the united part of filaments ca. 4 in Sabah at present as cited below. mm long ， the upper free part of filaments Habitat and ecology: See Sunarno and altemately altemately short of ca. 1.5 mm and longer of Ohashi in J. Jpn. Bo t. 71: 244 (1 966). 1n open ca. ca. 2 mm. Ovary 2-2.5 mm long ，glabrous; habitat ， the plant is an erect shrub up to 3m tall stipe stipe 2.5-3 mm long ， densely puberulous; or a liana up to 7m tall ， but in dense forests it style style ca. 2 mm long ，glabrous; stigma small; becoming up to 20 m high. ovules ovules 2 -4. Pods indehiscent ，entirely thick- Vernacular names: Akar langsa (South ened ，firm ，falcate ， 2.5-7 cm long ， 1.5-2 cm Segaluid). wide ，0.5-0.7 cm thick ， dark brown to blackish Specimens examined: brown with irregularly cracked on lateral sur- Sabah. Tangkulap (Arsat BNB 1328 ，K ，OXF); Pangkalan Bangi. Bangi. fl. ，Aug. (Fraser 274 ， K); Elopura ，Segaluid ， Sandakan. faces faces and upper suture ，finely puberulous but fl. ，May (Kadir NBFD A-2802 ，K ， L). glabrescen t. Seeds 1-4， reniform ，compressed ， 9. Dalbergia havilandii Prain in 1. Asia t. 1.5-2 1.5-2 by 0.5-0.7 cm large ， blackish brown ， Soc. Beng. 70 (2): 45 (1 901) & in Ann. Roy. shinning. shinning. Bo t. Gard. Calc. 10: 60 ，t. 35B (1904). Type: Distribution: Distribution: Endemic to Borneo (Brunei ， Bomeo ，Sarawak ， near Kuching. fl. ， Apr. 1893 Kalimantan ，and Sarawak) (Fig. 3C). (Haviland 2894 ，Lectotype designated here ， Habitat Habitat and ecology: 1n primary forests ， K). along along river banks ， at 50-75 m in altitude. Distribution: Endemic to Borneo (Sarawak) Flowering Flowering in April and Septembe r. (Fig.3D). Taxonomic notes: This species was de- Taxonomic no 旬以 Prain (1904) suggested scribed scribed by Prain (1901 ， 1904) without charac- that this species is a small tree and placed the ters ters of flower petals. Specimens Hose 578 (L) species near to D. hullettii which he thought and Ashton BRUN 5556 (L) were similarto D. near to D. rostrata based on similarity in in- falca ωin vegetative characters ， but the flow- florescence and number ofleaflets. However ， ers ers are similar to D. kunstlerii Prain from based on flower characters we think it may be Malaya. Malaya. These finding convinced us that these nearer to D. velutina than to D. rostrata. are are flowering specimens of D. falcata. Specimen examined: Sarawak near Kuching. fl. March Specimens examined: 1894 (Havilandi 2894 ，Lectotype ，K and 2895 ，Syntype ， K). Brune i. S. Damit ，Belait. 日.， Ap r. 1959 (Ashton BRUN- 10. Dalbergia hoseana Prain in Ann. Roy. 5556 ， L). Kalimantan. West Kutei ，by Long Petah. 日.， Sept. (Endert Bo t. Gard. Calc.l0: 67 (1 904). Type: Bomeo ， 3504 ，BO); S. Sambas 仕. 1893-94 (Hallier 1170 ，BO ， L). Sarawak ，Kuching. 日.， 300c t. 1894 (Haviland Sarawak. Baram district. 日.， Ap r. 1894-95 (Hose 578 ， L). & Hose 3375 ， Holo-: K ，1so-: A ，B 恥1，BO ， L). 8. 8. Dalbergia ferruginea Roxb. ， Fl. 1nd. 3: Distribution: Endemic to Borneo: Sarawak 228 (1832); Sunamo & Ohashi in J. Jpn. Bo t. (Fig.3D). 71: 71: 243 (1 996). Taxonomic notes: Prain (1 904) stated that Distribution: Distribution: Malesia and Australia (N. this is close to Dalbergia malabarica Prain Queensland). Queensland). 1n Malesia ，Borneo (Sabah and from 1ndia. The stipules are apparently similar Sulawesi) Sulawesi) (Fig. 3D) ，Papua New Guinea ，and to those of D. canescens. the the Philippines. Specimen examined: The type specimens. Prain Prain (1904) doubted the occurrence of D. 11. Dalbergia hullettii Prain in J. Asia t. ferrugin ωin (Fraser 274) ，be- Soc. Beng. 66 (2): 119 (1 897) ，& op. ci t. 70 (2): cause cause it was an East Malesian element which 45 (1901) ，& inAnn. Roy. Bo t. Gard. Calc.l0: never never crossed the W allace' s line to the Wes t. 59 ，t. 35A (1 904); Ridley ， F l. Ma l. Penins. 1: August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 209

590 (1 922). Type(n.v.): Singapore ，Thompson Specimens examined: Sarawak ，unknown exact locality (Motley 32 ， K); Li o road ，5 miles from Singapore ， in swampy Matu ，Baram distric t.日.， Nov. (Moultob 41 ， K); Bukit scrub scrub jungle. 日.， Feb. 21 ，1855 (R. W. Hullett Kepayang ，Jesselton ，alt. ca. 150 m. fl. & fr. ，May (M. Shah & 626 ， Holo-: probably SING). Kadim MS 1007 ，BO ，K ， L). Sabah. Shang Lian unlogged area ，Nabawa distric t.日.， Distribution: Distribution: Borneo (Sarawak and East Aug. (Fidilis & Sumbing SAN 109946 ， K); near Sandakan ， al t. Kalimantan) Kalimantan) (Fig. 4A) ，and Singapore. ca. 30 m. 日.， June (Keith NBFD 7230 ，K ，KEP ， L); Kabili ， Habitat Habitat and ecology: In heat forests or SepilokFo r. Res. ， Sandakan. fr. ， July (Matusop NBFD 7421 ，K ， KEP); Ulu Sungei Kun Kun (Gibot SAN 97204 ，BO ，K ，KEP); swampy scrubs. Flowering in July to Septem- Km 97 ，.Sungei Kaingaran ， district ，on hill ridge be- ber. ber. A specimen found to grow in rocky sand- tween Ulu Sungai Kaingaran & Sungai Tungud. fl. ， July (SAN stone stone habita 1. Leafless on full flowering or 99278 ，K ，KEP ， L). sometimes several young leaves flushed. 13. Dalbergia kostermansii Sunamo & H. Field Field notes: An erect shrub or small tree in Ohashi ， sp. nov. (Fig. 6). open areas or a woody climber up to 25 m in Species haec ab D. albertisii Prain differt dense dense forests. Flowers creamy. leguminibus longioribus late oblongis laevibus ， Taxonomic notes: Prain (1904) suggested foliis 5-7 -foliolatis ovatis vellate ovatis nervis that that the species was closely related to D. lateralibus 5-7 -jugis. hav i/ andii . Frutex erectus vel scandens ad 5m altus in loco loco aperta vel liana ligna ad 25 m altus in Specimens examined: Sarawak. Tanjong po head land ，Bako National Park. 日. sylva densa ，folia 5-7 -foliolata ，foliola ovata bud ， 19 June 1984 (Ching S 42176 ，K ，KEP ， L); 3 miles south vellate ovata ， 3.5-7 cm longa ， 1.5-3.5 cm lata. of of Kuching. 仕.， March 1966 (Anderson S 23492 ，K ， L). Kalimantan. West Kutei ，by long Petah. 日.， Sep t. (Endert Inflorescentiae terminales paniculatae 9-3 cm 3504 ，BO). longae ，flores ca. 3 mm longi ，pedicelli 0.5-1 12. 12. Dalbergiajunghuhnii Benth. in Miq. ， mm longi. Legumina incrassata mesocarpiis l. P l. Jungh. 1: 254 (1851) & in J. Linn. Soc. 4. suberosis late oblonga ，3-4 cm longa ，2-3 cm Supp l.: 33 (1 860); BakerinF l. Bri 1. Ind. 2: 233 lata. (1 879); Prain in J. Asia 1. Soc. Beng. 66 (2): Type: Bomeo. East Kalimantan. central 115 115 (1 897) ，& in Ann. Roy. Bo 1. Gard. Calc. Kutei ， Sg. Mahakam ， river bank near 10: 10: 40 ，1. 14 (1 904). Type: Sumatra ，Batak Samarinda(Kostermans 6129 ， Holo-: L ， photo Lands ，Padang ， at ca. 1000 m altitude TUS; Iso-: L ，BO ， K). (J unghuhn 233 ， Holo-: K ，Iso-: L.). An erect or scandent shrub ，up to 5m high D. phyllanthoides Blume ex Miq. ， F l. Ind. in open places ， or climber in dense forests ，up Ba 1. l: 134 (1 855); PraininJ. Asia 1. Soc. Beng. to 25 m high; young branches ，slightly striate ， 70 (2): 60 (1 901) ，& in Ann. Roy. Bo 1. Gard. sparsely puberulent ， older branches blackish Calc. Calc. 10: 44 ， 19 (1 904); Ridley ， F l. Ma l. Pen. brown ， conspicuously striate ， glabrous and 1: 1: 590 (1 922) ， syn. nov. Type: Java. (Blume slightl y lenticellate. s.n. s.n. HLB. 909.84-167 ， Lecto-: L). Stipules caducous or rarely subpersistent ， Distribution: Distribution: Borneo (Sabah and Sarawak) triangular ， obtuse at apex ，1. 0- 1. 5 mm long ， (Fig. (Fig. 4A) ，Sumatra ， Peninsula Malaysia ，and sparsely appressed puberulen 1. Leaves 4-8 cm Java. Java. long; petioles 1.5-3 cm long ， sparsely

Habitat Habitat and ecology: Usually in primary or appressed puberulent or glabrescent ラ striate; secondary secondary forests; along river or in forest mar- rachis 2.5-5 cm long. Leaflets 5-7 ， ovate to gin ，sometimes on rocky areas ， limestone hills ， broadly ovate ， 3.5-7 cm long ，1. 5-3.5 cm grass grass fields ， dry areas or at sea shore; 1-800 m wide ， coriaceous or firmly chartaceous ，ob- in in altitude. tuse ，rounded or slightly cordate at base ，more 210 植物研究雑誌第72 巻第4号 平成9年8月

Ttitil---fia-- ωOB

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Fig. Fig. 6. Dalbergia kostermansii Sunamo & H. Ohashi. A. Branch with young fruits ， B. B. Fl ower ， C. Calyx opened ， D. Petals ， E. Connate stamens ， F. Pistil ， G. Young fruit ，H-J. Pod ，H. lateral ，1. adaxial ， 1. transverse section. Voucher: (A-G) Kostermans Kostermans 6129 holotype & (H- ，乃島 10gea 3733. or or less cuspidate at apex and mucronulate at midrib prominent ，lateral nerves 5-7 -pairs; very very top; upper surface dark brown ，slightly petiolules 2-3 mm long. glossy ，sparsely white appressed puberulent to Inflorescences terminal ，paniculate ， 9-13 more or less glabrous; lower surface paler ， cm long ， sparsely appressed white short sparsely sparsely short appressed white puberulent ， puberulent or almost glabrous; bracts caducous August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 211 or or subpersistent ， broadly ovate ，ca. 1 mm long ， leaves inD.α lbertisii) ，lea f1 ets with cuspidate sparsely sparsely puberulent; bracteoles persistent ， apex and 5-7 pairs of secondary veins. From ovate ，sparsely puberulen t. D. bintuluensis ， this new species differs in Flowers Flowers white or pale green ，ca. 3 mm long; having 5-7-foliolate leaves with mucronulate pedicels pedicels 0.5-1 mm long ， rather densely lea f1 ets (against 3-5-foliolate and retuse leaf- puberulen t. Calyx green when fresh ， lets inD. bintuluensis) and 3-4 cm long fruits campanulate ， ca. 2 mm long ， tube ca. 1 mm (against 5-6 cm long in D. bintuluensis). long ， glabrous except on the margin ， lowest A f1 0wering specimen ， Hallier 1158 ，was lobe lobe obtuse to slightly acute ， ca. 1 mm long. identified by Hallier as a species of H ippocratea Standard Standard erect ， broadly obovate ， 2.2-2.5 mm of Celastraceae ， but the specimen belongs to long ， ca. 2.0 mm wide ，hastate to sagittate at Dalbergia because stamens of the specimen base ，rounded or emarginate at apex ， claw ca. have small obovate to slightly globular anthers 0.3 0.3 mm long. Wings oblong ， 1.5-1.7 mm long with short transverse slits. by ca. 0.5 mm wide ，attenuate at base ，rounded The specific epithet is dedicated in honor of at at apex; claw ca. 0.4 mm long. Keel-petals the late D r. A.J.G.H. Kostermans ofHerbarium subovate ， ca. 1. 8 mm long by 0.7-0.8 mm Bogoriense ，who devoted his life for study on wide; wide; attenuate at base ，rounded or obtuse at f1 0ra of Malesiana. apex ，claw ca. 0.4 mm long. Stamens 9-10 ， Specimens examined: monadelphous ， united part ca. 1 mm long ，free Kalimantan. S. Sambas. f1.， 1893/1894 (Hallier 1158 ，BO); central central Kutei ， Sg. Mahakam ，river bank near Samarinda. yg. fr.， part part of filaments altemately 0.4 or 0.6 mm Aug. 1951 (Kosterm 加 s6129 ・Type); upper Katingan ，Mendawai long. long. Pistil 1. 5- 1. 6 mm long ， scarcely river area ，Samba river ，B ukit Raya ，60-80 m altitude. Tumbang puberulent ， yellow in fresh ，stipe ca. 0.4 mm Samba ， ca. 8 km from the base camp at Tumbang Dahiya fr. Nov. 1982 (Mogea 3733 ，Bo ，K ， L). long; long; style ca. 0.2 mm long; ovules 1-2. Sarawak. Kg. Sebatong Ulu Merit ， ，third Division ， Pods entirely thickened ， with suberose October (Paie S. 28800 ，BO ，K ，KEP ， L); Sungai Segan ，4 miles south south ofBintulu. 日.， Oc t. (S. 18571 ，K ，-I，，，); Ulu Sungei Belaga ， mesocarp ， broadly oblong ，3 -4 cm long ，2-3 7th 7th Div. ，on rich soil ofriverine. young 仕.， 70c t. 1981 (Othman cm wide ，notreticulate-veined ，blackish brown ， et al. S 43525 ，K ，KEP ， L); Sungei Sepaku ，Belaga ， 7th Div. ，on slightly slightly glossy when dry. Seeds unknown. rich yellow soi l.日.， June (Othman et al. S. 43835 ，K ，KEP ， L); Distribution: Distribution: Endemic to Borneo (Central Ulu Sungei Sepaku ，Ulu Belaga ， Kapit 7th Div. ， in riverine forests. 合.， Nov. 1981 (Othman et al. S. 43879 ，K ，KEP ， L). Kalimantan and Sarawak). (Fig. 2) 14. Dalbergia mimosella (Blanco) Prain in Habitat Habitat and ecology: A shrub up to 5m high Ann. Roy. Bo t. Gard. Calc. 10: 42 (1 904); in in open area and becoming a strong liana upto Sunarno & Ohashi in J. Jpn. Bo t. 71: 244 25 m tall in a dense fores t. In riverine forests in (1 996). hill hill sides ， usually growing well in loamy or Distribution: Borneo (Sabah) (Fig. 3D) ， yellowish yellowish rich soil; 200-250 m in altitude. Sulawesi ，Sumatra ，and the Philippines. Taxonomic notes: This new species is simi- Habitat and ecology: See Sunamo & Ohashi lar lar to D. αlbertisii Prain from New Guinea in in J. Jpn. Bo t. 71: 244 (1 996). in f1 0rescences and pods and to D. bintuluensis Specimen examined: Sunamo & H. Ohashi described in this paper in Sabah. Sandakan; Hiew Sing logged area ，Coupe ， stipules stipules and f1 0wers as shown in Table 2. From distric t. fr.， Aug. (F. Krispinus SAN 95927 ，K ， L). D. albertisii ，D. kostermansii is distinct in 15. Dalbergia parviflora Roxb. [Hor t. having having longer (3 -4 cm long) ， broadly oblong ， Beng. 98 (1 814) ，nom. nud.]; Fl. Ind. 3: 225 smooth pods (against suborbicular ， 1.5 cm (1 832); Miq. ， F l. Ind. Ba t. 1: 132 (1 855); long ，reticulately veined pods inD. albertisii) ， Benth. in J. Linn. Soc. 4，Supp l. 33 (1 860); 5-7-foliolate 5-7-foliolate leaves (against 8-9-foliolate Prain inJ. Asia t. Soc. Beng. 66 (2): 127 (1 897); 212 植物研究雑誌第72 巻第4 号 平成9年8月

& op. ci t. 70 (2): 63 (1 901); Beccari ，NelleFo r. K ， L); Sepilok Forest Reserve. fr.， Sep t. (Me りer SAN 58686 ，K ， di di Bomeo 358 (1 902); Prain in Ann. Roy. Bo t. L); Near entrance to Jalan Hujong Tanjong ，Cp t. 13 ， Sepilok Forest Forest Reserve ，Sandakan Bay. fr.， Aug. (Sam SAN 61551 ， K); Gard. Gard. Calc. 10: 34 (1 904); Thothathri ， Tax. Ulu sungei Pin ， ，Lamag Distric t. fr. ，Sep t. (Madani Rev. Rev. Dalbergieae Ind. 191 (1 987). Type (n.v.): SAN 90983 ， K); Kapili ， Sepilok Forest Reserve ， Elopura Fo r. Distric t. f1. bud ，Ap r. (Enggoh NBFD 10213 ，K ， L). Moluccas ，Roxburgh s.n. (G). Sarawak ，unknown exact locality (Beccari 2149 ，K) ， Distribution: Distribution: Burma ， Indo-china (Laos and (Beccari 3589 ， K); 5 km upstream from Long Luyut ， near Long Thailand) ，and Malesia. In Malesia Borneo Palau ， 4th Div. ，young fr. ，Aug. (Fuchs 21225 ，K ， L); Redan river ，Baram Distric t. young fr.， Nov. (Hose 325 ，BM ，K ， L); (Brunei ， West Kalimantan ， Sabah ， and Baram distric t. f1.， Ap r. (Hose 595 ，BM ，K ， L); Baram distric t. Sarawak) Sarawak) (Fig. 4B) ，Sumatra ， the Philippines ， 日.， Ap r. (Hose se 663 ， K); Kuching. 仕.， Sep t. (Ridley 12464 ， K); Peninsula 乱1alaysia ，and Moluccas. Nanga Mawang ，Sungei Karap ，Baram distric t. fr.， Sep t. (Anderson S. 30706 ，K ， L); Sungei Taniku ，Lower Baram Forest Habitat Habitat and ecology: U sually in secondary Reserve ， 4th Div. f1.， May (0. Bin Ismawi S. 32025 ，K ， L). forests forests on river bank or along the sea shore ， in 16. Dalbergia pinnata (Lou r.) Prain in fresh fresh water swamp forests ， or inDipterocarpus Ann. Roy. Bo t. Gard. Calc. 10: 48 (1 904); forests; forests; on rich yellow soils ， clay soils or Thothathri ， Tax. Rev. Dalbergieae Ind. 114 alluvial alluvial soils; from the sea level up to 150 m in (1 987); Sunamo & Ohashi in J. Jpn. Bo t. 71: altitude. altitude. Flowering and Fruiting in March ， 245 (1 996). April ，August and October. Distribution: Distribution: India ，Indo 四 China ，Malesia ， Field Field notes: An erect or scandent shrub in and S. China. In Malesia ，Borneo (Kalimantan ， open areas or a strong woody climbers up to 30 Sabah ，and Sarawak) (Fig. 4B) ，Java ，Peninsu- m high in dense forests. The stems brown; lar Malaysia ， the Philippines ，Sulawesi ，and barks barks smooth ， pale brown; sapwoods yellow- Sumatra. ish ish or pale yellow. Peduncles ， pedicels and Habitat and ecology: In lowland to moun- calyx calyx green ，petals pale green ， stamens bright tain forests ，0 to 1700 m in altitude. See Sunamo yellow ，and pistils yellowish. & Ohashi in J. Jpn. Bo t. 71: 245 (1 996). Vemacular names: Takanas bini (Dyak Vemacularnames: Akah mahadoko (Dyak); Beruni); Beruni); Tooku-tooku (Sungei ， Dyak Omot (Dyak ，Kanangsian dusun). Sandakan); Sandakan); Kayu lakkah (Dyak); Garu lakka Specimens examined: (Dyak); (Dyak); Dorilak ，Lake (Orang Sungei ，Bor- Borneo ， not exact locality (Korthals s.n. ，K ， L). neo). neo). Kalimantan. Permatang ， south of Kuala Kayan ，Sampit rive r.日.， Jan. (AIston 13266 ，BM ，BO ， K); Foot ofM t. Kelam ， Specimens examined: M t. Knepai (Hallier 1626 ，K ，L ， P); Bandjarmasin. (Korthals Brune i. Nearentrance to Jalan Bukit Puan ， Sungei Belait ， in s.n. ， L); Kutei ， along Bekayan rive r. f1. & f r.， Ap r. (Kostermans river river bank. fr.， Aug. (Patrick SAN 61551 ，KEP ， L); about a half 10347 ，K ，L); B ukit Raya ，in a primary fores t.日.， Jan. (Noteboom ofmile ofmile above Bukit Puan ， Sungei Belait ， in river bank (Sinclair 4522 ，BO ，K ， L); Batu Badingding ， in a primary. fores t.日.& SF. SF. 10512 ，K ， L); Belait river ，Belai t. f1. & young 仕.， Jun (van young. fr. ， Feb. (Veldkamp 8544 ，BO ， L). Niel4641 & 4641 ，B ， L). Sabah. Bintang Mas Logging Co. area ，Karamak ，Lamag. Kalimantan. Ketapang ，Pontianak ，May-June 1925 (B. de f1.， June (Madani SAN 81772 ，K ， L); Miles 75.5 ， Telupid road ， Yong bb. 8326 ，BO); Pleihar i. f1. & f r.， Oc t. (A. Kadri bb. 19257 Sandakan. f1. & fr. ，Aug. (GibotSAN91261 ， K); BukitSungaru ， & 19258 ，BO); Kuala ，Pontianak(J. v. de Yongbb. 32243 ，BO ， Weston ， Beaufort Dist r. fr.， June (Bidin SAN 80576 ，K ，KEP ， L); L); Sungei Kaptias (Jaheri s.n. ，BO); Pontianak (Teijsmann s.n. ， L); Mile 24 ，Sook Plantation ，. 日. & f r.， Aug. (Madani BO); Sungai Landak (Teijsmann s.n. ，BO). SAN 87153 ，K ， L). Sabah. Pin rive r. fr.， Sep t. (Arsat BNB 1243 ，K ，OXF); Sarawak. Rejang ，Sillo ，Kalong. 日.， Aug. (Haviland 2888 ， Tanjong Bula t. young fr.， Nov. (Arsat BNB 1249 ，K);Tanah BM ， K); M t. Buan ，limestone. 日.， Dec. (Haviland 2027 ， K); Bundo. f1.， Ap r. 1926 (Coklin BNB 2450 ，BO); Beaufort. 仕.， (Taha BNB 2012 ， K); Kanangsian. 日. & f r.， March. Aug. 1932 (Bakar BNB 2471 ，BO ，K ，OXF); Elopura ， Sandakan. (Goklin BNB 2050 ， K); ，Mempakul ， levelland on young 仕.， Oct. (A. Cuadra BNB A ，1027 ，BO); Suar ，Lamba ， a secondary fores t.日.， Oc t. (Tandon BNB 4230 ，BO ， K); Diwata Elopura. Elopura. fr.， Nov. 1939 (Puasa & Luggoh BNB 10617 ，BO ， L); forest res. ， Lahat Datu ， primary forest (Sinanggu SAN 39977 ， Bukit Bukit Kretretam Concession area ，Cp t. 15 ，BN Timber Co ， K ， L). . f1.， May (Wood SAN 4846 ，KEP ， LO; Sungei 17. Dalbergia richardsii Sunarno & H. Binuang Camp ，Kretam ， (Singh SAN 30670 ， August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 213

A

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B J~t;íß務絞タムヂ》 イぷ予三種議総ミミ言ミブノ メ三;〆 司、代制ど必ヘー~~.~~~~{:~丈 ~

Fig.7. Fig.7. Dalbergia richardsii Sunamo & H. Ohash i. A. Flowering branch ， B. Flower ， C. C. Petals ， D. Calyx opened ， E. Connate stamens ， F. Pisti l. Voucher: Richards 1527. 214 植物研究雑誌第72 巻第4号 平成9年8月

Table Table 3. Difference between Dalbergia borneensis ， D. richardsii ， and D. rostrata

Species/ Species/ D. richardsii Sunamo & D. borneensis Prain D. rostrata Hass k. Characters Characters H.Ohashi

Stipule Stipule lanceolate ， ovate ， broadly ovate ， 5-6 mmlong ， ca. 3 mm long ， ca. 1 mm long ， subpersistent subpersistent caducous early caducous

Leaflet Leaflet 5-11 ， 3-5 ， (1 -)3-5 ， 25-30 x 10-15 mm ， 30-100 x 20 -6 0 mm ， 40-180 x 20-90 mm ， apex apex obtuse apex acummates apex rounded to obtuse

Inflorescence Inflorescence I paniculate 1-3 fasciculate or paniculate racemose racemose

Bracteole Bracteole caducous ， narrowly perslstent ， early caducous ， ovate ovate or subulate ， triangular ovate ， narrowly ovate to linear ， ca. ca. 1 mm long ca. 2 mm long ca. 1 mm long

Flower Flower 5.5-6.5 mm long ca. 7.0 mm long 6-7 mm long

Calyx Calyx ca. 4 mm long ， ca. 5 mm long ， 3.5 -4 .5 mm long ， obtuse obtuse at base gibbous at base obtuse at base

Standard Standard ca. 6.5 mm long ， ca. 5 mm long ， 6-6.5 mm long ， emargmate emargmate at apex rounded at apex emarginate or rounded at apex

Wing ca. 3.5 mm long 2-2.5 mm long 3-3.5 mm long

Keel-petal Keel-petal 2.7-3 mm lQng ca. 2 mm long ca. 3 mm long

Pistil Pistil 6-7 mm long; 5.5-6.0 mm long; 5-5.5 mm long; ovary ovary densely hairy; glabrous; densely hairy; style style 1- 1. 5 mm long ca. 0.5 mm long 1.5-2 mm long

Ohashi ， sp. nov. (Fig. 7). lata apice obtusa vel rotundata. 1nflorescentiae A Dalbergia borneensi Prain foliis 3-5- racemosae vel fasciculatae cum 1-3-flores. foliolatis foliolatis foliolis bracteolis et floribus (ca. 7 Flores 6-7 mm longi ， vexillum refractum ca. 5 mm longi vs. in D. borneensi 5.5-6.5 mm mm longum apice retundatum ， stamina 9-10 longi) longi) magnoribus ，aD. rostrata inflorescentiis monadelpha ， pistillum 5.5-6 mm longum racemosis racemosis vel fasciculatis (vs. in D. borneensi glabrum. Legumen ignotum. et et rostrata paniculati) ，bracteolis minoribus ， Type: Borneo. Sarawak: 1V Div. Ulu calycibus calycibus basigibbosi differ t. Ti 吋訂， near Long Kapa ， M t. Dulit ，日. Aug. Lianaligna ，folia3-5-foliolata ，foliolaovata 1932 (Richards 1527 ， Holo-: L ，photo in TUS; vel vel elliptico-oblonga 3-10 cm longa 2-6 cm 1so-: BO ， K). August 1997 Jouma1 of Japanese Botany VoL 72 No. 4 215

A large woody climber; young branches acterized by 3-5-foliolate leaves and large stout ， glabrous to sparsely pubescent ，scantly flowers about 6-7 mm long with a gibbous lenticellate ，shallowlyridgeddownwards; stip- calyx about 5 mm long. It is similar to D. ules ules caducous ，ovate ，ca. 3 mm by 2 mm large; borneensis Prain in habit ， but leaves ，inflores- puberulen t. Leaves 5-10 cm long ，petioles 2- cences ，bracteoles ，and flowers ofboth species 3 cm long ，sparsely short hairy; rachis 3-7 cm differ clearly as shown in Table 2. This species long. long. Leaflets 3-5 ，coriaceous to subcoriaceous ， is also similar to D. rostrata Hass k. in leaves ， ovate ovate or elliptic-oblong ，3-10 cm long ，2-6 cm i.e. ，number (1 一子 foliolate) and size of leaf- broad ， obtuse to rounded at base ，acute at apex ， lets ，number of lateral nerves (7-10 pairs) and blackish blackish brown and glabrous above; paler and size of flowers (6-7 mm long) ，but ，differences glabrous glabrous beneath; midrib prominent beneath ， in both species are in inflorescences ，bracteoles ， glabrous; glabrous; lateral nerves 5-8 in each half of and calyx as shown in Table 2. leaflet; leaflet; petiolules 3-5 mm long. 18. Dalbergia rostrata Hass k. in Fora 25 ， Inflorescences Inflorescences axillary ，1-3-flowered Beib l. 2: 53 (1 842); Sunamo & Ohashi in J. fasciculate fasciculate or racemose ， ca. 1 cm long ，sur- Jpn. Bo t. 71: 245 (1 996). rounded rounded by scaly bracts at base; bracts ovate ， D. simplicifolia Merr. in Phi l. J. Sci. Bo t. persistent; persistent; bracteoles subpersistent ，triangular 11: 87 (1 916). Type: Bomeo ，Sarawak ， ， ovate ， ca. 2 mm long ，pubescen t. Flowers fl. Apr. 1895 (Hose 678 ， Holo-: L; Iso-: BM ， yellowish yellowish white ，6-7 mm long; pedicels ca. 4 BO ， K). mm long ，rusty puberulen t. Calyx bell-shaped ， D. pseudosissoo Miq. ， F l. Ind. Ba t. 1: 128 gibbous gibbous at base ，ca. 5 mm long ， densely rusty (1 855) ，nom. illeg.: Thothathri ， Tax. Rev. puberulent; puberulent; tube ca. 4 mm long ， lowest lobe Dalbergieae Ind. 67 (1 987).

triangular ，ca. 1 mm long. Standard refractive ， Distribution: SriLanka ，S. India ，Indo 回 China blade blade suborbicular ， wider than long ， ca. 2.0 (perhaps in Thailand and Cambodia) ，and mm long by ca. 2.5 mm wide; subhastate at Malesia. In Malesia ，Borneo (Brunei ， base ， rounded at apex ，reticulately veined; Kalimantan ，Sabah ， and Sarawak) (Fig. 4B) claw claw ca. 3 mm long. Wings blade oblong ，2.0- and west to East Malesia except New Guinea. 2.5 2.5 by 1.5-1.8 mm; subhastate at base ， rounded Habitat and ecology: See Sunarno and at at apex; claw ca. 3 mm long. Keel blade Ohashi in J. Jpn. Bo t. 71: 246 (1 966). oblong ， ca. 2.0 mm by 1.5-1.8 mm large; Vernacular names: Lankit (Dusun auriculate ， rounded at apex; claw ca. 3 mm Tambunan ，Sepilok ， Dyak). long. long. Stamens 9-10 ，monadelphous ， united Specimens examined: part part offilaments ca. 4 mm long ，free part 0.7- Brunei. Seria ，Belait ，swampy fores t. fl. ，Aug. (Van Niel 4067 ， L); Seria ，Belait ，Swampy fores t.日.， Ap r. (Van Niel 0.8 0.8 mm long. Pistils 5.5-6.0 mm long ，gla- 4461); Belait river ，Belai t. fl. ，Ap r. (Van Nie14633 ， L). brous; brous; stipe 2.5-3.0 mm long; style ca. 0.5 mm Kalimantan ，unknown exact 1oca1ity (Kortha1s s.n./HLB. long ， stigma small; ovules 1-2. Pods unknown. 908 .1 14-1388 ， L); Kutei ，Mahakam near Samarinda. 日.， Aug. (Kostermans (Kostermans 6130 ，BO ， L); Sungei Smittouw (Hallier 1273 ， Distribution: Distribution: Endemic to Borneo ，known BO ，K ， L); Wowogei ，Kenara (Hallier 1371 ，BO ，K ， L); Sungei only only from the type specimen (Fig. 2). Knepai (Hallier 2165 ，BO ，K ， L); Gn. Pamotan (Korthals s.n./ Habitat Habitat and ecology: A hill forest climber HLB. 908.114-1384 ， L). Sabah. Sabah. Sandakan: Dallas ， via Dusan ，Kinabalu. 日.， Sep t. (J. growing growing in primary forests on spurs of moun- & M.S. Clemens 26531 ，BM); Penibukan ridge jungle. fl. ，Sep t. tains ，ca. 700 m in altitude. (1. & M.S. Clemens 40366 ，BM ，K ， L); Sungei Temburong ， Field Field notes: A climber on a tall tree ，flower- Temburong distric t. fl. ，March (Smithies et al.， SAN 17393 ，A ， BO ，BRI ，K ， L); Penibukan ridge ， Kinabalu M t. (J. & M.S. ing ing at about 6m or more from ground upwards. Clemens 40450a ，BM); Bukit Serudong ，Tawao Distric t.日.， Taxonomic notes: The new species is char- Sep t. (Abu Bakar SAN 23054 ，K ，L); Sepilok Forest Res. ，Forest 216 植物研究雑誌第72 巻第4号 平成9年8月

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Fig. Fig. 8. Dalbergia sandakanensis Sunamo & H. Ohashi. A. Sterile branch ， B. Branch with pods ， C. Lower surface of leaflet (densely hairy) ， D. Upper surface of leaflet (sparsely short short hairy) ， E. Fruit ， F. Cross section offrui t. Voucher: Ramos Bur. Sci. 1883. August 1997 Joumal of Japanese Botany Vo l. 72 No. 4 217

Table Table 4. Difference between Dalbergia canescens and D. sand α， kanensis

Species/ Species/ D. sandak αnensis Sunamo & D. D. canescens Merrill Characters Characters H.Ohashi

U5(t--ehom‘ 咽・・且円組 ∞ omufhgy争 ρ 。 t'し Stipule Stipule 'FU W suborbicular ， 可寸 mHkw 一曹司 UU'Eai ca. 1 mm long ， ie 戸し v 叫 glabrous

Leaf Leaf 15-2 トfoliolate 9-17 -foliolate

;lrd山 31mm05mmdA mm'EEiruv 0.nJMeaσ Leaflet Leaflet MOO-一一 か 10-20 mm long ， 円 Givh 'oδ 8-12 mm wide ， 主 剖い「 u.t市」し 内川凶PAPA V42L obtuse at apex; 凶 C h'v・刊 lateral lateral nerves H obscure

Bracteole Bracteole linear ， broadly ovate ， 2-2.5 2-2.5 mm long ca. 1 mm long

制 '唱 072ukebmgoHVEE Mmg93eohu-Jtt25kde mααω川明hdαN Ydσ7kb. 旧白σ Pod --rMa'n onon EA か瓜 55 盲目 -一 C gdax 一七一‘， nnEA日 '2 i がた創白山 11tttORU ・けは ，、，-KIpo 〈剖う沼怠剖町 色-、戸し 屯司 』 1 ， b drd 9U白配勾 nu1 P3. rt 汀剖口‘、一，冒目品沼 [;l vtt オ 陀ほ 山、且盲目且 ac ，、且 ， P ・剖況 wud

Dep. Elopura. fl. ，Oc t. (Kadir NBFD A-544 ，BO ， K); Sepilok Eusungei ，Ulu Medamit ， ， 5th Div. fl. ，June (George S Forest Forest Res. ， near landing place. 臼.， Oc t. (Meijer SAN 23054 ， 43061 ，K ，KEP ， L). BO); Sepilok Res. Forest On short ridge ， east of main ridge. 日.， 19. Dalbergia sandakanensis Sunarno & Sep t. (Patrick SAN 39666); Near camp ， Sepilok Forest Res. (Patrick (Patrick SAN 39676 ， L); JalnPangkalan ， Sepilok ForestRes. fl. ， H. Ohashi ，sp. nov. (Fig. 8). Aug. (Patrick SAN 64741 ，K ， L); Sepilok Forest Res. 日.， Aug. Dα lbergia canescens Merrill primo adspectu (Ampon & Simbut SAN 下ヰ 282 ，K ， L); Agriculture Ul u Duam. maxime simile ， sed stipulis suborbicularibus fl. ， June (Tarodop SAN 87981 ，K ， L); Ul u sungei Brantian ， Germinsam ，Brantian ，Tawao. 自.， Ap r. (Sigin et al. SAN 96409 ， 0.6-1 mm longis glabris ，foliis 9-17 -foliolatis K ， L); Sungei Kuntun. fl. ，June (Aban SAN 97074 ，ANS ，K ， foliolis brevius apice obtusis nervis lateralibus KEP ，L ，UKMB); Bettoian. 日.， Aug. (SF 19119 ，BM ，BO ， K). obscuris ，leguminibus oblongis vel late Sarawak: not exact location. (Beccari 3908 ，K);~around Long Selato 時 Gn. Lepo ，Baram district ， 4th Div. fl. ，March oblongis 9-12 cm longis 3-3.5 cm latis basi et (Chin (Chin 2834 ， L); Kuching. 日.， Jan. (Havilland 2095 ，BM ， K); apice rotundis ，stylo caducis. Santubong. 日.， Sep t. (Havilland & Hose 3277 ，BM ，K ， L); Liana ligna ， folia 9-17 -foliolata ，foliola Kuching. Kuching. fl. ， June (Havilland & Hose 3284 ， K); Baram distric t. 日.， Ap r. (Hose 678 ，BM ，BO ，K ， L. Type of Dalbergia elliptica vel oblonga ， 10-20 mm longa ，8-12 simplicifolia simplicifolia Merrill); North slopes of M t. Penrissen (South of mm lata apice obtusa vel rotundata. In- Kuching) ， primary fores t.日.， Aug. (Jacobs 5069 ，K ， L); Bukit florescentiae paniculatae vel compositae Raya ，Kapit ， ca. 600 m altitude ，mixed Dipterocarpus Forest (Chai (Chai S 18918 ，K ， L); Batang Mersing ，Anap ， basalt hill side corymbosae. Legumina samaroidea ，mem- mixed Dip t. forest ， ca. 400 mm altitude. fl. ，24fAug./64 ，(Sibat branacea ， oblonga vellate oblonga ，9-12 cm Ah Luang S 21935 ，Bo ，K ，KEP ， L); Semi Layar F. R. ，Bintulu. longa ， 3-3.5 cm lata ，reticulato-venosa. fl. fl. bud ，Sep t. (Ili as Pa S 32047 ，BO ， L); Buan For. Res. ，Bintulu. fl. ，Sep t. (ChaS 32114 ，BO ，K ， L); Tanjong Long Amok ， Sungei Type: Bomeo. Sabah. Sandakan and vi- 218 植物研究雑誌第72 巻第4号 平成9年8月 cinity. cinity. fr.， Sep t. -Dec. 1920 (Ramos Bu r. Sci. distinguished from each other by stipules ， 1883 ， Holo-: L ， photo TUS; Iso-: BO ， K). leaves ，and fruits as shown in Table 3. It is A woody climber up to 15 m tall; branches distinguished particularly by its large pods (9~ tough ，terete ， densely rusty pubescent when 12 cm long and 3-3.5 cm wide) from D. young ，becoming sparsely brown hairy ，striate velutina Benth. which has pods 5-7.6 cm long or or slightly fissured and white lenticellate on and 1.5-1.8 cm wide and from D. borneensis old old branches. Prain of which the pod ， according to Prain Stipules Stipules caducous ，suborbicular ， 0.6-1 mm (1 904) ，is 5.7-6 cm long and about 2 cm wide. large ， glabrous. Leaves (9-)11-15(-17)- 20. Dalbergia scortechinii (Prain) Prain in foliolate ， densely rusty pubescent ，5-13 cm J. Asia t. Soc. Beng. 66 (2): 444 (1 897) ，& in long ，petioles 1-1.5 cm long; rachis 4-8 cm Ann. Roy. Bo t. Gard. Calc.l0: 40 ，t. 15 (1 904). long. long. Leaflets chartaceous ，elliptic to oblong ， Distribution: Borneo (Kalimantan ，Sabah 10-20 mm long by 8-12 mm broad ， obtuse to and Sarawak) (Fig. 4D) ，Bangka ， Peninsular rounded at both ends ，rather oblique ，slightly Malaysia ，and Sumatra. apiculate ， without a tuft of hairs at the very Habitat and ecology: A lowland forest spe- apex; apex; upper surface sparselybrown hairy ， dark cies ， usually in a secondary forest on sandy brown when dry; lower surface densely brown loamy soils or sandstone substratum in 50- hairy ， paler than the other when dry; midrib 200 m altitude. Flowering in June ，September conspicuous ， densely hairy; lateral nerves in- and Decembe r. conspicuous; conspicuous; petiolules 0.5-1.0 mm long. Vemacular names: Pirasak (Dyak ，Munut In f1 0rescences axillary ，densel y brown short Bokan). hairy ， paniculate or compound corymbose ， Field notes: A climbing shrub up to 25 m lax lax -flowered; bracts caducous ， narrowly ovate ， high. Flowers odorless ， calyx green ， corolla ca. ca. 1 mm long ， densely rusty pubescent; greenish white ，filaments pale green ， anthers pedicels pedicels subsessile or shortly 0.5-1.0 mm long ， orange ，and pistil green. densely densely rusty puberulous; bracteoles persist- Specimens examined: ent ， broadly ovate ，ca. 1 mm by 0.7 mm large ， Kalimantan. Blac Oc. (Jaheri 1465 ，BO). Sabah. Mile 87.5 ，Hap Seng Logging area ，Telupid ， sparsely sparsely rusty puberulent or glabrous. Flowers Sandakan distric t.日.， June (SAN 83596 ，K ，KEP ， L). only only seen in bud. Calyx campanulate ，glabrous Sarawak. Middle Napagun ，damp forest ，ca. 100 m a1titude. or or ciliate on lobes. Stamens 9， monadelphous. fl. ， June (Keith BNB 9205 ，K ， L); Rejang. 日.， 1893 (Haviland 2893 ，BO ，K ， L); Left bank of Rejang river ， ca. 10 Km below Pods samaroid ，membranous ， oblong to Belaga Segaham range ，by Belaga air field ， sandstone 3rd Div. broadly broadly oblong ，9-12 cm long by 3.0-3.5 cm Kapit district ， Belaga subdistrict. fl. ，Sept. (Jacobs 5452 ，BO ，K ， broad ， yellowish brown in dry ， with reticulate L); Kampung Pueh ，Sematan ， secondary thicket ， ca. 30 m altitude altitude fl. bud Sep t. (Purseglove & M. Shah no. P .4 828 ，K ， L). veins; veins; base rounded ，decurrent; rounded at Taxonomic notes:The species is very close apex; apex; style deciduous; stalk 2-5 mm long ， to to D. junghuhnii ， but it could easily be distin- glabrous. glabrous. Seeds not seen. guished ，especially in the field by its vegeta- Distribution: Distribution: Endemic to Borneo. (Fig. 2) tive tive characters also in the slightly differences Habitat Habitat and ecology: Found in damp forests m genera tI ve parts. at at low altitude. 21. 21. Dalbergia velutina Benth. in Miq. ， P l. Taxonomic notes: The new species seems Jungh. Jungh. 1: 255 (1 851) ，& in J. Linn. Soc. 4. to to be close to Dalbergia canescens Me 汀 ill Supp l. 43 (1860); Prain In J. Asia t. Soc. Beng. which was found in North Bomeo and the 66 (2): 117 (1897) & op. ci t. 70 (2): 43 (1 901) ， Philippines Philippines in having leaves with many small in in Ann. Roy. Bo t. Gard. Calc. 10: 74 ，t. 55 leaflets leaflets and thinly samaroid pods ，but ， they are (1 904); Ridley ， F l. Ma l. Penin. 1: 592 (1 922); August 1997 Jouma1 of Japanese Botany Vo l. 72 No. 4 219

Thothathri ， Tax. Rev. Dalbergieae Ind. 99 ca. 3 mm long; lobes subequal ， the lowest (1 987). Type. Sylhe t. Holo-: Wallich 5868B longer then others ， ca. 1 mm long. (K-W). Habitat andecology: On white sandy soil ，at Distribution: Distribution: India (Assam) ，Bangladesh ， 8m in altitude. Flowering in Septembe r. Myanmar ， eastwards to Indo-China ，and Taxonomic notes: A specimen ， Purseglove Malesia. Malesia. In Malesia ，Borneo (Kalimantan and & M. Shah P.-4416 (L) ，may represent a new Sabah) Sabah) (Fig. 4D) and Peninsular Malaysia. species. It is similar to D. rostrata Hassk. and Habitat Habitat and ecology: Usually along margin D. havilandii Prain in number of the lea f1 ets ， of of lowland to hill forests: 5-700 m in altitude. but differs by shape of leaflets and terminal Field Field notes: An erect or scandent shrub to 4 in f1 orescence. m tall in open place ， or a liana in a dense forest Specimen examined: up to 10 m tal l. Usually the outer bark dark Sarawak. Penrisson road ， miles 6， Kuching. fl. bud ，Sep t. (Purseglove (Purseglove & M. Shah P.-4416 ， L). gray gray or shiny silvery gray and dark purple to dark dark brown in young parts ，smooth or rough The first author thanks to the British Coun- with with cracked when old; sapwoods whitish ， cil ， Flora Malesiana Foundation ，and Japan heartwoods heartwoods contain a dark reddish liquids. Society Society for the Promotion of Science (JSPS) Flowers Flowers fragrant ， calyx pale green ，and lea f.司 for for financial support during his studies in Royal lets lets yellowish green or bluish green above ， Botanical Botanical Gardens ，Kew; R 討ksherbarium ， greenish greenish white or pale green below. Leiden; Leiden; and Tohoku University ， Sendai. We Taxonomic notes: Prain (1 901) recognized are are grateful to Drs. R.M. Polhill and B. va r. maingayi Prain (1 897) based on several Verdcourt Verdcourt at Kew ， Drs. P. Baas ， C. Kalkman ， specimens specimens including Haviland 1444 (K). In the the late R. Geesink and F. Adema at the the the field ， the variety differs mainly in the Rijksherbarium ，and D.E. Boufford at the hairiness hairiness of lea f1 ets and young branches. Harvard Harvard University Herbaria for their help Specimens examined: Kalimantan ， not exact location (J aheri 1759 ，BO); Li ang when we had studied in their herbaria. We gagang. gagang. fl. ，1893-1984 (Hallier 2951 ，BO). wish to thank Dr. T. Nemoto of Biological Sabah. Gays is l. fl. ，Aug. (Haviland 1444 ， K). Institute Institute of Tohoku University and Dr. Ha 汀 y Wiriadinata Wiriadinata ofHerbarium Bogoriense for their Unknown species advice and help. This work was accomplished Dalbergia sp. as a part of doctoral dissertation of the first A woody climber; young branches terete ， author submitted to Tohoku University under glabrous glabrous to or rather densel y brown puberulen t. supervision of the senior autho r. Leaves l-foliolate ， broadly oblong or ovate ， 5-7 cm long ，4-5 cm wide ， obtuse at apex ， References firmly firmly coriaceous ， glabrous above ， densely Hollis S. and Brummitt R. K. 1992. World geographical scheme for for recording plant distributions. Hunt Institute for Botani- appressed appressed short brown puberulent below ， cal Documentation ，Camegie Mellon University. Pittsburgh. prominently prominently reticulate beneath; lateral nerves Merrill E. D. 1921. A bibliographic enumeration of Bornean 8-10 pairs; petiolules 0. 4- 0.5 cm long ，densely plants. J. Straits Branch R. Asia t. Soc. Special no. 637 pp. Prain Prain D. 1901. Noviciae Indicae XVIII. The Asiatic species of puberulen t. Inflorescenc p- s axillary paniculate ， Dalhergia. J. Asia t. Soc. Beng. 70 (2): 39-65. up to 4 cm long; bracts caducous; bracteoles 一一一一一一 1904. The species of Dα Ihergi αof Southeastern Asia. linear ，ca. 1 mm long. Calyx in young flowers Ann. Roy. Bo t. Gard. Calc. 10: 1-114 ，pls. 1-9 1. Sunamo B. and Ohashi H. 1996. Dalbergia (Leguminosae) of 3-4 mm long ， densely rusty puberulent ， tube Sulawesi ，Indonesia. J. Jpn. Bot. 71: 241-248. 220 植物研究雑誌第72 巻第4号 平成9年8月

スナラノ a，大橋広好 b .ボルネオ島のマメ科ツル サイカチ属植物 マレーシア植物区系地域のマメ科の中でツルサ 本館所蔵の押し葉標本に基づいて研究した結果， イカチ属は最も分類学的研究の遅れている分類群 21 種を認めた(表1).このうち 14 種は Prain の 1 つであり，この地域全体の種類が扱われてい (1904) がすでに報告した種と同じもので， 11 種に る研究は Prain (1901 ，1904) によるアジア産種のモ ついては学名も同じであり 3 種では学名が変更 ノグラフ以外にはない.マレーシア地域の中でも された.新しく加えられた 7 種は 4 新種および3新 ボルネオ島は種類が多く，これまでにボルネオ島 分布種 (2 種はフィリピン 1種はシンガポールに からは Prain (1904) や Me 凶 11 (1921) によって 16 種が 知られていた)であった. 報告されていた(表 1) .本研究では，主にボゴー cインドネシア・ボゴール植物標本館，

ル (BO) ，キュー (K) ，ライデン (L) 各植物標 b 東北大学大学院理学研究科生物学教室)