New Or Noteworthy Trees from Micronesia XII by Ryozo

New or Noteworthy Trees from Micronesia XII

Ryozo Kanehira

With 5 Text-Figures ReceivedOctober 20, 1934

(126) Dioscorea flabellifolia PRAIN & BURKILLin Leafl. Philip. Bot. 5 (1913) 1593, Journ. As. Soc. Beng. II, 10 (1914) 12; KNUTH in ENGL. Pflanzenr. 87 (1924) 188. No. 2316 (det. Dr. MERI~IL), Palau, Aimiriik, July 31, 1933. In primary forests at about 100 m altitude. Distrib. Philippines and Borneo. (127) Ficus tenuistipula MERR.in Philip. Journ. Sci. 9 (1914) Bot. 75. No. 2252 Saipan, K. MITUDAJune 1933. The type from Guam. Distrib. Endemic. Palaoea KANEHIRAgen. nov. Sapindacearum. Arbor, f oliis alternis, exstipulatis, pinnatis, foliolis alternis, ovatis, falcatis. Inflorescentiis terminalibus, paniculatis, flavido-tomentosis, floribus polygamis (2) ; sepalis 5, aequalibus, extus tomentosis, intus glabris ; petalis 5, eglandulosis, ovatis, extus parce villosis, staminibus 10 interdem usque ad 13, disco intus insertis, fila.mentis filiformis pilosis, antheris oblongis, dorsoaffixis, introrsis, parce villosis ; ovario ovoideo, piloso, 5-loculari, ovulis- in loculis solitariis, erectis ; stylis brevibus, pilosis ; fructibus obovoideo- globosis, 5-locularis, indehiscentibus, seminibus exarillatis.

(128) Palaoea f alcata KANEHIRAnov. sp. (Fig. 25) Arbor circiter 12 m alta, 80 cm diametro, ramis ramulisque teretibus, glabrescentis, foliis impari- vel paripinnatis, usque ad 40 cm longis, foliolis crasse coriaceis, nitidis, sicco olivaceo-brunneis, subtus subconcoloribus, ovato-oblongis vel oblongo-lanceolatis, 8-12 cm longis, 4-5.5 em latis, leviter f alcatis, apice acutis vel brevisissime acuminatis, basi inaequilateraliter obtusis, costa supra sulcata, subtus perspicue elevata, nervis primariis 10-12, prope ad marginem anastomosantibus, reticules supra subobsoletis, subtus distinctis, petiolulo 3-10 mm longo. Inflorescentiis paniculatis, terminalibus usque ad 25 cm longis, 15 cm latis, flavido-tomentosis, ebracte- atis, pedicellis 3-10 mm longis, sepalis 5, imbricatis, ambitu orbicularis, leviter concavis, 5 mm longis, 4 mm latis, extus depresse tomentosis intus 272 THE BOTANICAL MAGAZINE [Vol. XLIX, No. 581

Fig. 25. Falaoea f alcata KANEHIRA (A) A branchlet with flowers x 2/3. (B) A flower x 3. (C) A flower, calyx and petals taken off x 4. (D) A sepal x 7. (E) A petal x 7. (F) A stamen x 14. (G) An ovary x 8. (1I) A branchlet with fruits x 2/3. (I) Fruit ill cross section. (J) A seed x 2. (K) Ovary in longitudinal section (magn.). (L) The same in cross section (magn.). glabris, petalis 5, ovatis, 4.7 mm longis, intus lobulis binis inflexis ovatis obtusis f erentibus, extus parce villosis, disco crasso, parce villoso, 3 mm diametro, staminibus 10, interdem usque ad 13, ad basin ovarii intra disco insertis, 5 mm longis, filamentis pilosis, antheris dorsaffixis, parce villosis ovario obovoideo, 5-loculari, loculis 1-ovulatis, ovulis erectis ; f ructibus May20,19331 R . KANEHIIRA-NEW TREES FROM MICRONESIAX11 273 obovoideis, 3 cm diametro, sicco 5-gonis, 5-locularis, exoearpum crasseum, fibrosum, endocarpium osseum, indehiscentibus, seminibus oblongis, acutis, 10 mm longis, exarillatis. Nos. 2426 (fibs.) , 2427 ! (fibs.) , 2441 ! (f r.) R. KANEHIPA,Peliliu, Palau Islands. Aug. 10, 1933. In swamp forests at low altitudes. This geneus is apparently allied to Tristiropsis* but I consider it to be generically distinct because of its nearly equal sepals ; its 5-called ovaries with one ovule in each cell ; and its indehiscent woody obovoidal fruits. This tree has a straight trunk, smooth bark, the flowers green in anthesis, about 6 mm in diameter, 7 mm long. It is known only from Peliliu island, situated in the southern part of the Palau Group. The cotypes have been distributed to the botanical institutions of New York, Berlin-Dahlem and Paris.

(129) Tristellateia australasie A. RICA. Sert. Astrolab. Atlas (1833) t.15 ; MERKin Philip. Journ. Sci. 7 (1912) Bot. 236, Enum. Philip. Fl. P1.2 (1923) 380. No. 2398 Palau, a coral island near Airai, Aug. 6, 1933. In primary forests. Distrib. Malay Peninsula and Archipelago to tropical Australia, Philippines, Formosa, Loochoo and New Caledonia. This species is new to the flora of Micronesia. Jap. name: Kosyun-kadura.

(130) Ventlllago Nlsldal KANEIIIRASp, nov. Frutex scandens, ramulis et petiolis et inflorescentiis f errugineo- pubescentibus, ramis ramulisquc teretibus, foliis ovatis vel oblongo-ovatis, coriaceis, usque ad 8 em longis, 4 cm latis, sicco olivaceo-brunneis, nitidis, subtus glabrescentiis, utrinque subconcoloribus, obscure serrulatis, apice latissime acuminatis, basi rotundatis, plerumque leviter inaequilateralibus, nervis primariis circiter 5, sicco utrinque elevatis, prope ad marginem curcuvato-anastomosantibus, reticulis gracilibus, distinctis, hetiolo 8 mm longo. Inflorescentiis axillaribus terminalibusque, f errugineo-pubescentibus, parse ramosis, usque ad 8-10 cm longis, minutissime bracteolatis, bracteolis oblongo-ovatis, 1 mm longis, extus pubescentibus ; floribus numerosis, subsesslhbus, 3-6 f asciculatis, 2 mm diametro, calycibus lignosis, pubescentibus, 5-fidis, tubo obconico, lobis acutis, 1.2 mm longis, intus carinatis, petalis 5 obcordatis, 0.5 mm longis, leviter retusis, basi abrupte

The type of Tristiropsis obtusangula RADLK.is from the Marianne Islands (locality not mentioned). I have collected a sterile specimen in Tinian (No. 1054) belonging to Sapindaceae. But the patches where I collectedthis tree were burnt for cultivation and I have never come across the tree in the Marianne Islands, and the genus not exactly identified. 274 THE BOTANICAL MAGAZINE [vol.ZLIX, No. 581

angustatis, staminibus 5, basi petalis adnatis, disco 5-gono, margine libero, ovario in disco immerso, stylis brevissimis, stigmatibus 2, brevibus ; fructibus ignotis. No. 2763 S. NISIDA,Aimiriik, Palau Islands, May 1933. This species is distinguished by its subserrate, few-nerved leaves and f errugineous-pubescent inflorescences. The genus is new to the flora of Micronesia.

(:131) Tabernaemontana aurantiaca GAUDICII.Bot. Freyc. Voy. (1826) 50; MIQ. Fl. Iid. Bat. 2 (1856) 424; F. v. MUELL. Descr. Notes on Pap. Pl. 2 (1885) 12; K. SCIIUM. u. HOLLR. Fl. Kais. Wilhelmsl. (1889) 112; WARB. in ENGL. Bot. Jahrb. 13 (1891) 405; BAILEYQueensl. Agr. Journ. 3 (1898) 201; BoERL. Fl. Ned. Ind. II, 2 (1899) 397; MGF. in Nova Guinea 14 (1926) 284, ENGL. 1. c. 61 (1927) 201. Rejou.a aurantiaca GAUDICII.Bot. Freyc. Voy. (1826) 451, t. 61. Palau Airai No. 2383 (det. MARKGRAF),Aug. 5, 1933. A medium-sized tree, about 4-5 m high, planted near houses of the natives. It is said that the seeds were collected from a tree growing in primary forests at Gashol, Palau. Distrib. New Guinea.

(132) Canthium polyneurum (VAL.) KANEHIRAIn Bot. Mag. Tokyo 46 (1932) 672 (Photo. 3 ) Plectronia polyneurum VAL. In ENGL. Bot. Jahrb. 63 (1930) 309. Ps ychotria Merrillii KANEIHRA1. c. 674, Fl. Micr. (1933) 371, f. 197, sun. nov. No. 843 Ponape Niinoanizan, Nos. 1608, 1618, 1661 Na,naraut-zan. The specimens have been compared with the type of VALETON'sspecies, LEDERMANNNo. 13814.'`

(133) Amaracarpus carolinensis VAL. In ENGL. Bot. Jahrb. 63 (1930) 318. No. 1508 Ponape, July 13,1931; No. 2475 Palau Korror Aug. 14, 1933. The specimens have been compared with the type, LEDERMANNNo. 14099. The type locality is Korror, Palau.

(134) Amaracarpus carolinensis var. squarrosa VAL. 1, c. 319. No. 655 Ponape, Kolonia, Aug. 8th, 1929. The specimen has been compared with the type LEDERMANNNo. 13267.

* The author expresses his thanks to Dr. L. DIELS,Director of the Botanical Gardens,Berlin-Dahlem, who has kindly forwardedhim fragments of VALETON'stypes of Micronesianspecies in various genera of the Rnbiaceae. May 20,193 ] R, KANEHIRA-NEW TREES FROM MICRONESIA XII 275

Photo 3. Canthiur polyneurum(VAL.) KANEHIRA The type (Berlin-Dahlem Herb.), LEDERMANNNo. 13814. (135) Amaracarpus hirtellus VAL. 1, c. 320. No. 1619 Ponape, Nanaraut-zan, July 23, 1931. In primary forest at about 450-500 n1 altitudes. The specimen has been compared with the type, LEDERMANNNo. 13413.

(136) Amaracarpus Kraemeri VAL. 1. c. 319. 276 THE BOTANICALMAGAZINE [vol.1LI1, No.5sl

No. 1297, Truk, Tol, June 23-24, 1931. In primary forests , Mt. Tol. The specimen has been compared with the type KRAEMERNo . 31.

(137) Amaracarpus macrophyl la VAL. 1. c. 317. No. 1671 Ponage, Nanaraut-zan, July 25, 1931. The specimen has been compared with the type, LEDERMANNNo. 13304.

(138) Amaracarpus kusaiensis KANEIIIRAsp. nov. (Fig. 26)

Fig. 26. Amaracar°pus l~usaiensis KANEHIRA (A) A branchlet with flowers x 2/3. (B) A flower x J. (C) Corolla expanded. (D) An ovary in cross section x8. May 20, 1933] R . KANE$IRA-N +W TREES FROM MICRONESIA XII 277

Frutex subglaber. Ramis ramulisque teretibus, ramulis elongates, distantibus, laevis rufo-brunneis, stipulis lineari-oblongis, 8 mm longis, rufo-hirtis, apice bifidis, lobis filif ormibus, 4 mm longis. Foliis firmiter chartaceis, brevipetiolatis, sicco rubro-brunneis, utrinque concoloribus. oblongo-ovatis vel oblongo-lanceolatis, leviter falcatis, 9-11 cm longis, 3-4 cm latis, apice acuminatis vel abrupte breviter acuminatis, basi cuneatis, nerves primaries utrinque 13, circiter ad marginem arcuato-anastomosantibus, subtus valde distinetis, reticules subobsoletis, petiolo 10 mm longo, glabrescenti. Inflorescentiis axillaribus, pedunculatis, peduneulis gracilibus, quam f oliis brevioribus, plerumque trichotome ramosis, paucifloris. Bractis bracteolisque gracilibus, parce ruf o-hirtis, calycibus late ovoideis, dentatis, 1.5 mm longis, corollae tubo 3 mm longo, intus dense barbato, fructibus ignotis. No. 1339 Kusai Island, July 1st, 1931. In primary forests at medium altitudes. This is distinguished from all other known species of Amaracarpus from Micronesia by its oblong-lanceolate leaves with very prominent parallel nerves and glabrous inflorescences with slenderly bracteoled flowers, and long corolla tubes.

Fig. 27. Timonius Icorrensis KANEHIRA (A) A brauehlet with flowers x 2/3. (B) A branehlet with fruits x 2/3. (C) A flower x3. 278 THE BOTANICAL MAGAZINE [vol.XLIX, No. 581

(139) Timonius korrensis KANEHIRAin Bot. Mag. Tokyo 45 (1931) 351, Fl. Micr. (1933) 383, f. 207. (Fig. 27) Descriptio aucta. Frutex subglaber, partibus junioribus et inflores- centiisque et subtus f oliis parce pubescentibus, f oliis crasse coriaceis, ovatis vel obovatis, usque ad 12.5 cm longis, 6.5 cm latis, apice obtusis vel brevissime acuminatis, basi plerumque obtusis, nervis primariis utrinque 6, anastomosantibus, reticulis, utrinque subobsoletis, petiolo usque ad 2.5 cm longo, subcomplanato. Cymis masculi- nis axillaribus pedunculatis, pedun- culis circiter 5 cm longis, dichotome ramosis, bracteis bracteolisque ovatis, acutis, pubescentibus ; floribus paucis, breviter stipitatis, calycibus campan- ulatis, parce pubescentibus, 2 mm longis, irregulariter dentatis, corollae tubo gracili, 13 mm longo, 1.5 mm lato, extus albido-pubescenti, lobis 4 oblongis, 1.5 mm longis, intus parce pubescentibus. Palau Korror. On an uninhabited coral island. No. 2436 (young male fibs.), No: 2444, 2462! (fibs.), No. 2466 (f r.) Aug. 1933. The type of the species was collected from rather young branches. The mature leaves are thickly coriaceous and nearly glabrous. It is distinguished by its very long slender corolla tubes.

Trukia KANEHIRA gen. nov. Rubiacearum. Arbor glabra, f oliis oppositis, petiolatis, coriaceis, oblongis, stipulis Fig. 28. T r ukia megacarpa KANE,HIRA interpetiolares lanceolatis, acutis, per- (A) A flower (magn.). sistentibus. Inflorescentiis axillari- (B) The same in longitudinal section bus vel e ramis infra foliis, Cymis (magn.). dichotome ramosis, ramis divaricatis, (C) An ovary in cross section.

* The generic name Trukia is from the name of the island Truk, where this plant was found. May 20, 193J R . KANEHIRA-NEW TREES FROM MICRONESIA X11 279

quam fohis brevioribus, bracteis bracteolisque ovatis, floribus herma- phroditis (2), pentameris, pedicellatis, calycibus extus glabris, tubo obovoideo, truncato, corolla infundibuliformi, tubo extus sericeo, intus basin versus pubescenti, f auce glabro, lobes patentibus, oblongis, hastatis, con- tortis, staminibus inclusis. Discus annularis, ovarium biloculare, stylis columnaris, stigmatibus fusiformibus, ovulis in loculis numerosis, in plancentis 2-partitis septo longitudinaliter adnatis, uniseriatim conf ertis. Fructibus globosis, indehiscentibus, pericarpo lignaceo, lepidoto, seminibus compresses, 7- ad 8-pyrenis.

(140) Trukia megacarpa KANEHIRAcmb. nov. (Fig. 28) T2ron2us megacarpus KANEHIRAIn Bot, l\lag. Tokyo 46 (1932) 494. Rhopalobrachium megacarpus KANEHIRAibid. 46 (1932) 674, Fl. 112icr. (1933) 376, f. 201. The contorted corolla lobes and indefinitely ovuled locales indicate the Gardeniae. The nearest alliance seems to be Brysophyllu,m, a genus known from Ceylon and India, but this new genus differs by its pentamerous flowers and indehiscent fruits. Rhopalobrachium to which the present plant was formerly referred, has fasciculate inflorescences and one-ovuled locales, and it is far from this genus.