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Home , Cupressus funebris, Cupressus nootkatensis, Cupressus torulosa

29(3): 32-39 T¹p chÝ Sinh häc 9-2007

Notes on the in Vietnam

Keith Rushforth The Shippen, Ashill, Cullompton, England, EX15 3NL

Summary

The of the of Cupressaceae indigenous to Vietnam is reviewed. tonkinensis Silba is considered the correct name for the Cupressus in Langson province, not Cupressus torulosa . The genus is reduced to a subgenus of Cupressus and the new combination Cupressus vietnamensis (Farjon & Hiep) Rushforth made. The genus is not considered separable from and the combination Chamaecyparis hodginsii (Dunn) Rushforth is made. The associated with Cupressus vietnamensis and their conservation are discussed. Key words: Cupressus; Xanthocyparis; Chamaecyparis; Fokienia; Cupressus tonkinensis; Cupressus vietnamensis; Chamaecyparis hodginsii .

The Cupressaceae is now considered by some Kaikinh in Langson province, Vietnam; the authorities to include the Taxodiaceae [7] whilst collection was numbered 5073 and his other treatments [15] maintain the two families specimens are lodged at Paris (P) and New York as separate phylogenetic lines. My personal (NY). Chevalier (1919) identified it as opinion is to consider the Cupressaceae in the Cupressus funebris Endl. Silba (1994, 1998) traditional sense but to question whether described this material as a new species, Hayata's treatment (1932) of the Taxodiaceae as Cupressus tonkinensis . He designated the NY several distinct lineages may not be the most specimen as the holotype and the P specimen as coherent approach - the main difference the isotype. Other authorities (e.g. Farjon 1998, between Quinn's treatment in G adek et al. p 45) have considered Cupressus tonkinensis to (2000) and Hayata's treatment is in the level of be a synonym of Cupressus torulosa D. Don, a the units - Hayata has separate families, Quinn species otherwise known only from the western has subfamilies of Cupressaceae sensu lato. This Himalaya from central Nepal to northwest paper concerns only the members of the and adjacent southwestern Tibet (Xizang). Luu Cupressaceae sensu stricto - Cupressoideae & Thomas (2004), however, considered it to be Richard ex Sweet (Hortus Britannica: 372, a synonym of Cupressus funebris , though they 1826). expressed one or two reservations; they Four members of the Cupressoideae are concluded that it was definitely not a synonym found in indigenous natural forest in Vietnam. of Cupressus torulosa . Through the courtesy of These have been treated as belonging to the the Curator of the Herbarium at the Royal genera , Cupressus, Fokienia and Botanic Garden Edinburgh (E), I have been able Xanthocyparis . Some others are cultivated, such to borrow the Paris isotype and see a photograph as Cupressus arizonica Greene at Dalat and of the NY specimen. I have compared the Paris orientalis (L.f.) Franco at Hanoi. isotype with all the material of Cupressus torulosa in the Edinburgh herbarium. My 1. Cupressus in Langson province observations relate specifically to the Paris isotype, although the photograph of the NY In 1919 Philippe Eberhardt collected holotype appears to be the same. Both material from a 8-10 m in height growing at specimens are very fragile and fragmented. 32 The Paris isotype contains both foliage and the cones rounded in outline. The ultimate one-year cones (the photograph of the holotype shoots are radially symmetrical with no shows only foliage). differentiation into facial and lateral and The cones are almost round and have 8 the sprays are three-dimentional, never in two- scales (4 pairs of decussate scales), each scale dimentional or flattened sprays. The foliage on with a small prickle-like umbo. the material of Cupressus torulosa is either The foliage on the most recent growths smooth rounded (terete) or coarse rope-like with contains some shoots which are terete (round as rough regular projections; the coarse rope-like in a cylinder); on these shoots the decussate foliage appears to be correlated with the drier pairs of leaves are indistinguishable. However, inner-valley habitats and the terete foliage with most foliage is in flattened shoots with the moister outer ranges. dimorphic leaves; on these shoots the facial The above considerations shows that (Facial leaves are those facing you when a spray Cupressus tonkinensis is clearly not referable to is laid flat) leaves have an obvious dorsal gland Cupressus torulosa , differing in the cones with and are rhombic in shape; the laterals (Lateral only 8 (cf. 10-12) scales and in the mainly leaves are those at the side when a spray is laid flattened foliage (cf. rounded) with distinct flat) are adpressed with a blunt rounded tip of facial and lateral leaves. Taken with the 0.5 mm with only a weakly defined gland. geographical separation - from Laos to Sikkim! I examined the following material of - Cupressus tonkinensis warrants specific status Cupressus torulosa in the Edinburgh herbarium: and is not a synonym of Cupressus torulosa . Page 10715. Mussoorie Hill Station, India; Cupressus tonkinensis can be distinguished Walter Koelz 20354. United Provinces, India; R. from Cupressus funebris - on the basis of the E. Cooper 5793. Jheri Kulu, Punjab, India; limited material available - by the foliage of Stewart s.n. North West India; A. Anderson s.n.. C. tonkinensis being in flattened and sparse Mussoorie, India; Stainton 7593. Mazana Kulu, fan-shaped sprays and not in the long pendulous Himachal Pradesh, India; Blinkworth (Hb. sprays which characterise Cupressus funebris . Wallich 6046B), Kumaon, North West India; G. Also, the lateral leaves on the Paris isotype have Watt s.n. Thula, India; Hooker & Thomson, s.n.. blunt, adpressed tips, not the acute translucent Simla, India; Noshiro et al. 9455337 and tips to the lateral leaves of Cupressus funebris , 9455353. Dhawalagiri, Mustang, Central Nepal; and the glands on the facial leaves are more Minaki et al. 9106095. Karnali, Dolpa, West pronounced than in typical Cupressus funebris . Nepal; Stainton, Sykes & Williams 3273. The number of cone scales in Cupressus Maikot, Nepal; Stainton, Sykes & Williams funebris ranges from 6-10, thus straddling the 1673. Tajlung, South of Tukucha, Kali Gandaki, range of Cupressus tonkinensis . Central Nepal; Stainton, Sykes & Williams 726. Silba has cited two specimens at the Arnold Larjung, South of Tukucha, Kali Gandaki, Arboretum from , as belonging to Central Nepal; J. R. Reid s.n. Nainital (India: Cupressus tonkinensis , viz. Y. Tsiang 8004 and Uttaranchal); F. M. Bailey s.n. Chaha, West Steward, Chiao & Cheo 10. Through the good Nepal. offices of the two Curators, I have borrowed This material of Cupressus torulosa differs these and examined them at Edinburgh; they from the Paris specimen of Eberhardt 5073 in both fall within the range of Cupressus funebri s the following characters: and are not close to Cupressus tonkinensis. The cones (when present) have 10, Cupressus tonkinensis is, on our current occasionally 12 scales (i.e. 5, occasionally 6, knowledge, a Vietnamese endemic. pairs of scales); the scales in the one year cones At Huulung in Langson province (when present) have an umbo which is a [21°40'42"N, 106°22'42"E] at 220 m there is a prominent prickle making these cones spiky, not grove of circa twenty . These were planted rounded; however in mature (two year old) and in the late 1980's; the seed is reported to have older cones the umbo becomes eroded, making been collected from a tree or trees growing on 33 the nearby karst limestone peaks; other trees are limestone ridges just to the east of Quanba in also cultivated in gardens in the vicinity. These Hagiang province in 1999. This tree shows trees are not fully mature but the adult foliage considerable similarities to Nootka has the flattened sparse sprays of Cupressus which is found in western from tonkinensis . However, the tips of most of the northern to southern and lateral leaves are acute with a short incurved clearly the two species belong to the same mucro; some leaves, however, have the blunt genus. Historically Nootka cypress has been incurved tips characteristic of Cupressus variously treated as Cupressus nootkatensis D. tonkinensis . Don or Chamaecyparis nootkatensis (D. Don) My opinion is that the foliage of these trees, Spach, but recently the consensus had been which are only about 15 years old, is in an moving in favour of Cupressus both on intermediate stage between fully juvenile appraisals based on morphological characters foliage (where the leaves are in whorls of four [6] and on molecular data [7]. with the two decussate pairs superimposed) and The genus Xanthocyparis Farjon & Hiep has fully adult. I consider (on the currently available been proposed for both Nootka cypress and the information) that the Huulung trees are Quanba species (as Xanthocyparis vietnamensis Cupressus tonkinensis . Farjon & Hiep). Recent molecular work Interestingly the Huulung trees have both (Adams, pers. comm., Wang et al. [2003]) have adult (semi-adult?) and juvenile foliage on the shown Nootka cypress and the Quanba cypress same branches. Retained juvenile foliage seems nested within Cupressus , thus confirming the to be a feature of Eastern Asian Cupressaceae. It view expressed by Gadek et al. (2000). Little et is common for a decade or more on of al. (2004) have also shown both Nootka and Cupressus funebris and Cupressus chengiana S. Quanba as nested within a Cupressus Y. Hu and the genus Retinospora Sieb. & Zucc. clade including Juniperus, but have noted that was named for juvenile forms of Japanese the genus Callitropsis Orsted (non Compton) Chamaecyparis . However, this neatly leads into has priority over Xanthocyparis . Molecular work the Quanba cypress. has also shown that Fokienia is nested within Chamaecyparis (Gadek et al., 2000, Little et al. 2. Quanba cypress in Hagiang province 2004, Adams, pers. comm.). It is worth listing the principal characters of these genera to see A cypress was found growing on the karst whether there are one, two, three or four genera.

Callitropsis Cupressus Chamaecyparis Fokienia (Xanthocyparis) Either dimorphic Dimorphic Usually dimorphic Dimorphic or adpressed, Leaves rarely retain juvenile 6 - 16 10 - 16 6 - 8 (6 -)10 - 12 Male cones microsporangia microsporangia microsporangia microsporangia 2- 6 pollen sacs 2(- 3) pollen sacs 2 - 4 pollen sacs 3 pollen sacs Female Open 2 nd year Open 2 nd year Open first year Open 2 nd year? cones (6 -)8 - 6 scales 4 - 6 scales 8 - 12 scales 12 - 16 scales Female cone Valvate to sub- peltate Peltate Peltate scales peltate (1-)2( - 5) per Seeds 3 - 20 per scale 1 - 3 per scale 2 per scale scale 2 narrow lateral 2 thin or narrow 2 narrow lateral 2 unequal wings, Seed wings wings lateral wings wings 1 may be narrow 34 This tabulation shows that Callitropsis Basionym Xanthocyparis Farjon & Hiep in (Xanthocyparis) falls within the range of Farjon, Hiep, Harder, Loc & Averyanov, Novon variation of Cupressus except for four 12(2):179, 2002. TYPE: Cupressus characters: the number of cones scales is at the vietnamensis (Farjon & Hiep) Rushforth. bottom end of the range of Cupressus ; the Cupressus vietnamensis (Farjon & Hiep) number of ovules per fertile scale is also at the Rushforth, comb. nov. Basionym: Xanthocyparis bottom of the range of Cupressus and the scales vietnamensis Farjon & Hiep in Farjon, Hiep, are valvate to sub-peltate (c.f. peltate). The Harder, Loc & Averyanov, Novon, 12(2): 180, seeds of the Quanba cypress have two thin 2002. Callitropsis vietnamensis (Farjon & Hiep) lateral wings but those of Nootka cypress have D. P. Little in Little, D. P., A. E. Schwarzbach, narrow lateral wings (as in Cupressus ). R. P. Adams & C-F. Hsieh, Amer. J. Bot. Callitropsis ( Xanthocyparis ) differs from 91(11): 1879 (2004).TYPE: Vietnam. Hagiang: Chamaecypari s in the greater number of Quanba, Bat Dai Son, Bat Dai Son Protected microsporangia (10-16, cf. 6-8); the cones Area, 10th February 2001, D. K. Harder, N. T. maturing in the second year with only 4-6 (cf. 8- Hiep, P. K. Loc, L. V. Averyanov, G. E. Schatz 12) scales which are valvate to sub-peltate (cf. & S. Bodine DKH 6091 (holotype HN, isotypes peltate). MO, K, LE). My opinion is that the species assigned to Cupressus × notabilis (A. F. Mitchell) Callitropsis ( Xanthocyparis ) are not sufficiently Rushforth, comb. nov. Basionym distinct to be defined as a genus but fit within × Cupressocyparis notabilis A. F. Mitchell, J. the range of variation of Cupressus . However, I Roy. Hort. Soc. 95(10): 453. 1970. TYPE: consider that subgeneric status is justified, due England. Hampshire: Alice Holt Lodge, 31st to the number of cone scales and ovules (seeds) July 1963, Mitchell s.n. (holotype, K [not per scale being at the bottom of the range for seen]). Cupressus and the scales being valvate to sub- peltate (cf. peltate) and propose to use the Cupressus × ovensii (A. F. Mitchell) Xanthocyparis name for the subgenus. I do not Rushforth, comb. nov. Basionym consider that the retained juvenile foliage is a × Cupressocyparis ovensii A. F. Mitchell, J. generic character - this is an adaptation to the Roy. Hort. Soc. 95 (10): 454. 1970. TYPE: specific conditions and occurs in diverse genera England. Hampshire: Alice Holt Lodge, 1970, in different parts of the world. s.d., Mitchell s.n. (holotype, K [not seen]). Little et al. (2004) have both Callitropsis Both × Cupressocyparis Dallimore & A. B. (Xanthocyparis ) and Juniperus nested within Jackson (Forestry 11: 3. 1937) and Cupressus but with different clades of × Cuprocyparis Farjon (Novon 12: 188. 2002) Cupressus for Old World and New World become syn. nov. of Cupressus L. species. They suggest the possibility that the The habitat of the karst limestone ridges at nesting of Juniperus within Cupressus may Quanba is extraordinary. The discussion on require the separation of Cupressus into two ecology of Cupressus vietnamensis in Farjon et separate genera. However, the residual markings al. (2002) gives some idea of the range of of the scales on the cone of Juniperus chinensis associated plants. However, it does not give a L. has suggested that the genus was derived full list of the conifers found on these ridges, from Cupressus . Further proof of the validity of and misidentifies some of those listed. Apart this suggestion will not necessarily require the from Cupressus vietnamensis , there are: splitting of Cupressus into separate genera. Amentotaxus argotaenia (C. Presl) Kuntze The subsumation of Callitropsis which forms an understorey shrub. A specimen (Xanthocyparis ) in Cupressus requires the from this area but lacking the narrow but bright following new combinations: stomatal bands has been described as Cupressus L. subgenus Xanthocyparis Amentotaxus hatuyenensis but is unlikely to be (Farjon & Hiep) Rushforth, comb. et stat. nov. worthy of recognition. 35 Pinus wangii Hu & W. C. Cheng is a five that the adult population will be harvested, needled or soft pine which is otherwise known leaving no parent trees to provide the next only from nearby southeast . generation. Preventing any felling or harvesting Nageia fleuryi (Hickel) de Laub.. This has is unlikely to succeed; also just protecting the been confused with Nageia wallichiana (C. area is unlikely to be successful because the Presl) Kuntze which occurs in Cucphuong habitat is so restricted there is a risk that species national park. The easiest key character is that will be lost by random failure to regenerate. Perhaps a way around this conundrum would be the leaves of Nageia wallichiana have stomatal for a certain minimum number of trees, perhaps lines on both surfaces, whereas in Nageia 50 of each species in a given area, to be marked fleuryi they are only found on the lower surface and their felling only permitted when two (stomata are not very obvious even with a hand replacement trees can be identified. lens!). Pseudotsuga brevifolia W. C. Cheng & L. 3. Fokienia or PÐmou K. Fu is sometimes treated as a variety of Pseudotsuga sinensis Dode (as var. brevifolia Molecular investigations have shown that (Cheng & Fu) Farjon & Silba) but is easily Fokienia clusters with Chamaecyparis [7, 10]. separated by the shorter and broader leaves; In the paper by Gadek et al. (2002), it is only in Podocarpus wangii C. C. Chang. This species the cladogram based on non-molecular data that may be synonymous with Podocarpus pilgeri Fokienia is not sister to Chamaecyparis ; this Foxw. from Indonesia, Papua New Guinea and cladogram (fig. 4 in Gadek et al., 2002) is odd the Philippines; Tsuga chinensis (Franch.) E. in some other associations, such as Pritz.. It is interesting that this appears to Neocallitropsis with . In the paper by represent the most southerly occurrence of this Little et al. (2004) the cladogram derived from species (although, as I have not seen cones, I the ITS (nrDNA) showed Fokienia neatly nested cannot entirely eliminate the possibility that the within Chamacyparis , between Chamaecyparis tree could be Nothotsuga longibracteata (W. C. lawsoniana (Murray) Parlatore and Cheng) Hu ex C. N. Page (syn . Tsuga Chamaecyparis pisifera (Sieb. & Zucc.) Endl.. longibracteata W. C. Cheng). Tsuga dumosa (D. However, when other data, including Don) Eichler is found on the Hoanglienson morphological data was used, Fokienia came range north of Fansipan above the village of out as a sister group to Chamaeyparis . If the Bankhoang in Laocai province and is the most molecular data is strongly clustering Fokienia easterly occurrence of this otherwise Himalayan with Chamaecyparis , it questions the validity of species. the non-molecular characters used to separate the two genera. Taxus wallichiana Zucc. aggregate. At present it seems more sensible to use the Dunn (1908) first described Fokienia predominant aggregate name, rather than Taxus hodginsii but as a species belonging to chinensis (Pilg.) Rehd. or Taxus mairei LemÐe Cupressus section Chamaecyparis . It was Henry & LÐveill Ð. The species is clearly not the same & Thomas (1911) who proposed the genus as the one from Lamdong province in the south Fokienia . They compared it with of Vietnam which has also been called Taxus Chamaecyparis lawsoniana and Calocedrus wallichiana, but may be closer to Taxus macrolepis Kurz. Henry & Thomas's Latin sumatrana (Warb.) de Laub. diagnosis for Fokienia reads "genus novum Cupressinearum, inter Libocedrum et The conservation of these trees is a priority, but the needs of the local H'mong people for Cupressum collocandum; strobili globosi, timber and forest products also needs squamae peltatae, quam in Cupresso section considering. A particular difficulty is that trees Chamaecyparis , sed dispermae; semina bialata, like Pseudotsuga brevifolia and Pinus wangii alis lateralibus valde inaequalibus, quam in will become useful timber trees before they are Libocedro ; folia et habitus Libocedri sufficiently mature to cone. Thus there is a risk macrolepidis . Species unica, Fokienia hodginsii 36 Henry et Thomas. "This can be paraphrased as anthesis during the autumn but the actual time 'cones like Chamaecyparis but with only two of anthesis may be variable depending upon seeds, seed wing (and foliage) like Calocedrus climate - otherwise I must question the accuracy macrolepis ' - Calocedrus macrolepis is easily of the statement by Fu, Yu & Farjon in Wu & separated by the oblong cones with valvate Raven (, 4: 69, 1999) that scales hinged at the base. In the English pollination time is March-April. Apart from discussion Henry & Thomas suggested that the conelets around anthesis, I have only seen, seed wing was derived from the cone scale, not either on a living tree or in herbaria, mature integral with the ovule, and that the cones took autumn cones, not an intermediate one-year two years to ripen. conelet, as seen in Cupressus or Pinus . But do these characters hold good, and are I have examined the following material of they sufficient to justify a separate genus for Fokienia in the Edinburgh herbarium: R. C. Fokienia ? Ching 2345, King Yuan, , China; R. C. The character of two ovules per scale - Ching 2361, ibid; Hodgins, s.n., Foochow, "squamae°dispermae" - does not separate , China; J. Linsley Gressit 1740, Tai Fokienia from Chamaecyparis . Henry (in Elwes Yang, , China; Luo Lin-bo 1231, & Henry, 1910, p 1149 [in the publication Xining County, , China; J. Esquirol 2091, Tuy-sey-kiao, Guizhou, China; Y. Tsiang 7135, Chamaecyparis is only treated as a section of Ping Chow, Guizhou, China; Y. Tsiang 8867, Cupressus ]) had given for Chamaecyparis without precise locality, Guizhou, China; E.E. "Seeds one to five on each scale" and gives Maire 75, Tie-Tchang-Keou, Yunnan, China; J. "Seeds two to five on each scale" for Cavalerie 7663, Kunming (Yunnan-sen), Chamaecyparis lawsoniana (notwithstanding Yunnan, China; K. Rushforth 7460, Kunming Henry & Thomas (1911) citing three ovules for Botanic Garden, Kunming, Yunnan, China; K. Chamaecyparis lawsoniana ) and "one to two" Rushforth 137, Baoguoxi, Emei Shan, , (sic, surely he meant one or two!) for both China; W. T. Tsang 27297, Taai Wong Mo Chamaecyparis pisifera and Chamaecyparis Shan, Chuk-phai, Ha-coi, Vietnam; K. thyoides (L.) Britton et al. and "two" for Rushforth 3073, Fanxipan, ridge above Sinchay, Cupressus nootkatensis D. Don. Sapa, Laocai, Vietnam; Gardner, Thomas & Luu The wings on the seeds of Fokenia are more 20, Nam Qua river, Liemphu, Vanban district, pronounced than in any other Chamaecyparis or Laocai, Vietnam; Gardner, Thomas & Luu 26, Cupressus, and resemble those of Calocedrus . route to Ta Xa mountain, Liemphu, Vanban However, it is unclear that this is a generic district, Laocai, Vietnam; S. Ickert-Bond, R. character. In Pinus , there are species in the same Bond, Hiep & Phan Ke Loc 202, Paco, Maichau section of the genus with either rudimentary district, Hoabinh, Vietnam; Poilane 6527, rim-like wings or large functional wings. In Massif de la MÌre et l’Enfant, north of Ninhhoa, Betula , different parts of the genus may have Nhatrang, Khanhhoa, Vietnam; N. D. T. Luu & large wings a single cell in thickness or short, N. V. Chi 2, Honchang, Phuocbinh, rim-like wings several cells thick. In Cupressus NinhtThuan, Vietnam; N. D. T. Luu & N. V. Little et al. (2004, p. 1875) note variation, e.g. Chi 234, Bidoup, Lacduong, Lamdong, with the wings of some species being “highly Vietnam; N. D. T. Luu & N. V. Chi 235, ibid.; reduced”. In short, I do not see this as a generic N. D. T. Luu & N. V. Chi 236, ibid. character. My observations lead me to the conclusion The cones allegedly taking two years to that the cones ripen in the autumn following ripen is at variance with Chamaecyparis as anthesis, and thus do not take two years to generally treated today. However, I have mature. In this context it is interesting to note observed Fokienia in China and Vietnam and in that Gadek et al. (2000) for their non-molecular cultivation in England and examined the character 44 "Seed maturation: in the first year; material at Edinburgh. In Yunnan and northern in the second year or later" have both Vietnam I have observed the conelets reaching Chamaecyparis and Fokienia as maturing in the 37 first year. However, as their analysis includes conundrum - why is Chamaecyparis absent Cupressus nootkatensis within Chamaecyparis , from the east Asian mainland when it occurs on this may merely be an error on their part. Japan and Taiwan with no less than two species The characters given in the above table each. Various authorities have attempted to show Fokienia either within the range recorded resolve the issue, such as Wang et al. (2003) for Chamaecyparis (e.g. number of micros- suggesting an offshore migration from North porangia and pollen sacs) or overlapping (e.g. America to Japan and Taiwan bypassing the number of cones scales in the female cone). Asian mainland (but unfortunately did not include Chamaecyparis hodginsii in their Gadek et al. (2000) (if we exclude analysis), and others have postulated Cupressus Cupressus nootkatensis ) give only three non- funebris as belonging to Chamaecyparis and molecular characters to separate Chamaecyparis thus being the missing mainland species. and Fokienia (see Figure 5). These are "5. However, treating Dunn's species as Transverse walls of vertical parenchyma with Chamaecyparis hodginsii resolves the issue - small nodules ( Chamaecyparis ); with large this is basically Dunn's treatment, it is just that nodules ( Fokienia )", "27. Accumulation of he subsumed Chamaecyparis in Cupressus . nootkatin in the heartwood: absent ( Fokienia ); present ( Chamaecyparis )" and "36. Number of Chamaecyparis hodginsii has a distribution from Zhejiang and Fujian across to southeast ovules per cone scale: two ( Fokienia ); more Sichuan and then south to Lamdong and than two ( Chamaecyparis )". The last character Ninhthuan provinces in southern Vietnam. In clearly does not separate Fokienia and Vietnam it occurs in warm temperate to Chamaecyparis , and is not correct for subtropical montane forest. Chamaecyparis . The other two characters, if correct (and only two species of Chamaecyparis Acknowledgements : I would like to thank feature in their analysis, which does not include the Curators of the Herbaria at Edinburgh, Paris the type species, Chamaecyparis thyoides , do and the Arnold Arboretum for access to their not warrant separate generic status for Fokienia . collections. I would also like to thank Dr H. McAllister and an anonymous reader for I conclude, therefore, that the morphological comments upon the text, and Dr Tran Cong characters do not adequately differentiate Khanh and Do Thuy Linh. Fokienia from Chamaecyparis and consider, as indicated by molecular data, that the genus Bibliography Fokienia is not distinct from Chamaecyparis .

The following new combination is required 1. Chevalier A. , 1919: Bull. Ðcon. Indochine. in Chamaecyparis Spach: New ser., 137: 165-166. Chamaecyparis hodginsii (Dunn) Rushforth, 2. Dunn S. T. , 1908: J. Linn. Soc., Bot., 38: comb. nov. Basionym Cupressus hodginsii 367. Dunn, J. Linn. Soc. Bot. 38: 367, 1908. Syn. nov. Fokienia hodginsii (Dunn) A. Henry & H. 3. Elwes H. J. & A. H. Henry , 1910: The H. Thomas, Gard. Chron., ser. 3, 49:67, 1911. Trees of Great Britain and Ireland. Volume TYPE: China, Fujian, about Yenping at 5. Edinburgh. 2000 feet (600 m), S. T. Dunn 3505 (holotype 4. Farjon A. , 1998: World Checklist and Hongkong Herb. [non vidi]). Bibliography of Conifers. Royal Botanic I do not see any justification for treating Gardens, Kew. Fokienia kawaii Hayata (= F. hodgsinii var. 5. Farjon A. et al. , 2002: A new Genus and kawaii (Hayata) Silba) and Fokienia maclurei Species in Cupressaceae (Coniferales) from Merrill as other than synonyms of Northern Vietnam, Xanthocyparis Chamaecyparis hodginsii . vietnamensis . Novon, 12: 179-189. The treatment of Fokienia as part of 6. Frankis M. P. , 1993: Conif. Soc. Austral. Chamaecyparis resolves one botanical Newslett., 12: 9-10. 38 7. Gadek P. A. et al. , 2000: Amer. J. Bot., 12. Silba J. , 1994: J. Int. Conif. Preserv. Soc., 87(7): 1044-1057. 1(1): 23. 8. Hayata B. , 1932: Bot. Mag. (Tokyo), 96 13. Silba J. , 1998: J. Int. Conif. Preserv. Soc., (541): 24-27. 5(2): 38. 9. Henry A. & H. H. Thomas , 1911: Gard. 14. Wang W. P. et al. , 2003: Pl. Syst. Evol, Chron., ser. 3: 49: 67. Suppl., 241: 13-28. 10. Liitle D. P. et al. , 2004: Amer. J. Bot., 15. Fu L. G. , Y. F. Yu and A. Farjon , 1999: 91(11): 1872-1881. Cupressaceae: 62-77. Flora of China Vol. 4. 11. Luu N. D. T. & P. I. Thomas , 2004: C©y l¸ Science Press, Beijing and Missouri kim Vi ệt Nam. Nxb. ThÕ Giíi. Botanical Garden Press, St. Louis.

Ghi chÐp vÒ hä Cupressaceae ë viÖt nam

Keith Rushforth

Tãm t¾t

Bµi viÕt ®Ò cËp ®Õn ph©n lo¹i c¸c loµi b¶n ®Þa trong hä Cupressaceae ë ViÖt Nam. Tr−íc ®©y, mét loµi thuéc chi Cupressus ë tØnh L¹ng S¬n vÉn ®−îc x¸c ®Þnh lµ Cupressus torulosa, nh−ng nay tªn ®óng cña nã lµ Cupressus tonkinensis Silba. Chi Xanthocyparis ®−îc chuyÓn thµnh mét ph©n chi cña Cupressus vµ thµnh lËp mét tæ hîp tªn míi lµ Cupressus vietnamensis (Farjon & Hiep) Rushforth. Chi Fokienia kh«ng t¸ch khái chi Chamaecyparis nªn thªm mét tæ hîp tªn míi lµ Chamaecyparis hodginsii (Dunn) Rushforth. Bµi viÕt còng bµn vÒ b¶o tån c¸c loµi th«ng vµ hoµng ®µn ë ViÖt Nam.

Ngµy nhËn bµi: 13-3-2007

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