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Notes on the Cupressaceae in Vietnam

Notes on the Cupressaceae in Vietnam

29(3): 32-39 Tạp chí SINH HỌC 9-2007

NOTES ON THE IN

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 . The 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 collection was numbered 5073 and his authorities to include the [7] specimens are lodged at Paris (P) and New whilst other treatments [15] maintain the two York (NY). Chevalier (1919) identified it as families as separate phylogenetic lines. My Endl. Silba (1994, 1998) personal opinion is to consider the described this material as a new species, Cupressaceae in the traditional sense but to Cupressus tonkinensis. He designated the NY question whether Hayata's treatment (1932) of specimen as the holotype and the P specimen the Taxodiaceae as several distinct lineages as the isotype. Other authorities (e.g. Farjon may not be the most coherent approach - the 1998, p 45) have considered Cupressus main difference between Quinn's treatment in tonkinensis to be a synonym of Cupressus Gadek et al. (2000) and Hayata's treatment is torulosa D. Don, a species otherwise known in the level of the units - Hayata has separate only from the western Himalaya from central families, Quinn has subfamilies of Nepal to northwest and adjacent Cupressaceae sensu lato. This paper concerns southwestern Tibet (Xizang). Luu & Thomas only the members of the Cupressaceae sensu (2004), however, considered it to be a stricto - Cupressoideae Richard ex Sweet synonym of Cupressus funebris, though they (Hortus Britannica: 372, 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 These have been treated as belonging to the of the Curator of the Herbarium at the Royal genera , Cupressus, Fokienia and Botanic Garden Edinburgh (E), I have been Xanthocyparis. Some others are cultivated, able to borrow the Paris isotype and see a such as Greene at Dalat photograph of the NY specimen. I have and orientalis (L.f.) Franco at compared the Paris isotype with all the Hanoi. material of Cupressus torulosa in the Edinburgh herbarium. My observations relate 1. Cupressus in Langson province specifically to the Paris isotype, although the photograph of the NY holotype appears to be In 1919 Philippe Eberhardt collected the same. Both specimens are very fragile and material from a 8-10 m in height growing fragmented. at Kaikinh in Langson province, Vietnam; the

32 The Paris isotype contains both foliage ultimate shoots are radially symmetrical with and one-year cones (the photograph of the no differentiation into facial and lateral holotype shows only foliage). and the sprays are three-dimentional, never in The cones are almost round and have 8 two-dimentional or flattened sprays. The scales (4 pairs of decussate scales), each scale foliage on the material of Cupressus torulosa with a small prickle-like umbo. is either smooth rounded (terete) or coarse The foliage on the most recent growths rope-like with rough regular projections; the contains some shoots which are terete (round coarse rope-like foliage appears to be as in a cylinder); on these shoots the decussate correlated with the drier inner-valley habitats pairs of leaves are indistinguishable. However, and the terete foliage with the moister outer most foliage is in flattened shoots with ranges. dimorphic leaves; on these shoots the facial The above considerations shows that (Facial leaves are those facing you when a Cupressus tonkinensis is clearly not referable spray is laid flat) leaves have an obvious to Cupressus torulosa, differing in the cones dorsal gland and are rhombic in shape; the with only 8 (cf. 10-12) scales and in the laterals (Lateral leaves are those at the side mainly flattened foliage (cf. rounded) with when a spray is laid flat) are adpressed with a distinct facial and lateral leaves. Taken with blunt rounded tip of 0.5 mm with only a the geographical separation - from to weakly defined gland. Sikkim! - Cupressus tonkinensis warrants I examined the following material of specific status and is not a synonym of Cupressus torulosa in the Edinburgh Cupressus torulosa. herbarium: Cupressus tonkinensis can be Page 10715. Mussoorie Hill Station, India; distinguished from Cupressus funebris - on the Walter Koelz 20354. United Provinces, India; basis of the limited material available - by the R. E. Cooper 5793. Jheri Kulu, Punjab, India; foliage of C. tonkinensis being in flattened and Stewart s.n. North West India; A. Anderson sparse fan-shaped sprays and not in the long s.n.. Mussoorie, India; Stainton 7593. Mazana pendulous sprays which characterise Kulu, Himachal Pradesh, India; Blinkworth Cupressus funebris. Also, the lateral leaves on (Hb. Wallich 6046B), Kumaon, North West the Paris isotype have blunt, adpressed tips, India; G. Watt s.n. Thula, India; Hooker & not the acute translucent tips to the lateral Thomson, s.n.. Simla, India; Noshiro et al. leaves of Cupressus funebris, and the glands 9455337 and 9455353. Dhawalagiri, Mustang, on the facial leaves are more pronounced than Central Nepal; Minaki et al. 9106095. Karnali, in typical Cupressus funebris. The number of Dolpa, West Nepal; Stainton, Sykes & cone scales in Cupressus funebris ranges from Williams 3273. Maikot, Nepal; Stainton, 6-10, thus straddling the range of Cupressus Sykes & Williams 1673. Tajlung, South of tonkinensis. Tukucha, Kali Gandaki, Central Nepal; Silba has cited two specimens at the Stainton, Sykes & Williams 726. Larjung, Arnold Arboretum from , as South of Tukucha, Kali Gandaki, Central belonging to Cupressus tonkinensis, viz. Y. Nepal; J. R. Reid s.n. Nainital (India: Tsiang 8004 and Steward, Chiao & Cheo 10. Uttaranchal); F. M. Bailey s.n. Chaha, West Through the good offices of the two Curators, Nepal. I have borrowed these and examined them at This material of Cupressus torulosa Edinburgh; they both fall within the range of differs from the Paris specimen of Eberhardt Cupressus funebris and are not close to 5073 in the following characters: Cupressus tonkinensis. Cupressus tonkinensis The cones (when present) have 10, is, on our current knowledge, a Vietnamese occasionally 12 scales (i.e. 5, occasionally 6, endemic. pairs of scales); the scales in the one year At Huulung in Langson province cones (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, grove of circa twenty . These were not rounded; however in mature (two year old) planted in the late 1980's; the is reported and older cones the umbo becomes eroded, to have been collected from a tree or trees making the cones rounded in outline. The growing on 33 the nearby karst limestone peaks; other trees Hagiang province in 1999. This tree shows are also cultivated in gardens in the vicinity. considerable similarities to Nootka These trees are not fully mature but the adult which is found in western North America from foliage has the flattened sparse sprays of northern to southern Alaska and Cupressus tonkinensis. However, the tips of clearly the two species belong to the same most of the lateral leaves are acute with a short genus. Historically Nootka cypress has been incurved mucro; some leaves, however, have variously treated as D. the blunt incurved tips characteristic of Don or Chamaecyparis nootkatensis (D. Don) Cupressus tonkinensis. Spach, but recently the consensus had been My opinion is that the foliage of these moving in favour of Cupressus both on trees, which are only about 15 years old, is in appraisals based on morphological characters an intermediate stage between fully juvenile [6] and on molecular data [7]. foliage (where the leaves are in whorls of four The genus Xanthocyparis Farjon & Hiep with the two decussate pairs superimposed) has been proposed for both Nootka cypress and fully adult. I consider (on the currently and the Quanba species (as Xanthocyparis available information) that the Huulung trees vietnamensis Farjon & Hiep). Recent are Cupressus tonkinensis. molecular work (Adams, pers. comm., Wang Interestingly the Huulung trees have both et al. [2003]) have shown Nootka cypress and adult (semi-adult?) and juvenile foliage on the the Quanba cypress nested within Cupressus, same branches. Retained juvenile foliage thus confirming the view expressed by Gadek seems to be a feature of Eastern Asian et al. (2000). Little et al. (2004) have also Cupressaceae. It is common for a decade or shown both Nootka and Quanba as more on of Cupressus funebris and nested within a Cupressus clade including Cupressus chengiana S. Y. Hu and the genus Juniperus, but have noted that the genus Retinospora Sieb. & Zucc. was named for Callitropsis Orsted (non Compton) has priority juvenile forms of Japanese Chamaecyparis. over Xanthocyparis. Molecular work has also However, this neatly leads into the Quanba shown that Fokienia is nested within cypress. Chamaecyparis (Gadek et al., 2000, Little et al. 2004, Adams, pers. comm.). It is worth listing 2. Quanba cypress in Hagiang province the principal characters of these genera to see whether there are one, two, three or four A cypress was found growing on the karst genera. limestone ridges just to the east of Quanba in

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 sacs 2(- 3) pollen sacs 2 - 4 pollen sacs 3 pollen sacs Open 2nd year Open 2nd year Open first year Open 2nd year? Female 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 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, 1 Seed wings wings lateral wings wings 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, variation of Cupressus except for four Novon 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: bottom of the range of Cupressus and the Xanthocyparis vietnamensis Farjon & Hiep in scales are valvate to sub-peltate (cf. peltate). Farjon, Hiep, Harder, Loc & Averyanov, The seeds of the Quanba cypress have two thin Novon, 12(2): 180, 2002. Callitropsis lateral wings but those of Nootka cypress have vietnamensis (Farjon & Hiep) D. P. Little in narrow lateral wings (as in Cupressus). Little, D. P., A. E. Schwarzbach, R. P. Adams Callitropsis (Xanthocyparis) differs from & C-F. Hsieh, Amer. J. Bot. 91(11): 1879 Chamaecyparis in the greater number of (2004). TYPE: Vietnam. Hagiang: Quanba, microsporangia (10-16, cf. 6-8); the cones Bat Dai Son, Bat Dai Son Protected Area, 10th maturing in the second year with only 4-6 (cf. February 2001, D. K. Harder, N. T. Hiep, P. K. 8-12) scales which are valvate to sub-peltate Loc, L. V. Averyanov, G. E. Schatz & S. (cf. peltate). Bodine DKH 6091 (holotype HN, isotypes My opinion is that the species assigned to MO, K, LE). Callitropsis (Xanthocyparis) are not Cupressus × notabilis (A. F. Mitchell) sufficiently distinct to be defined as a genus Rushforth, comb. nov. Basionym but fit within the range of variation of × Cupressocyparis notabilis A. F. Mitchell, J. Cupressus. However, I consider that Roy. Hort. Soc. 95(10): 453. 1970. TYPE: subgeneric status is justified, due to the England. Hampshire: Alice Holt Lodge, 31st number of cone scales and ovules (seeds) per July 1963, Mitchell s.n. (holotype, K [not scale being at the bottom of the range for seen]). Cupressus and the scales being valvate to sub- Cupressus × ovensii (A. F. Mitchell) peltate (cf. peltate) and propose to use the Rushforth, comb. nov. Basionym Xanthocyparis name for the subgenus. I do not × Cupressocyparis ovensii A. F. Mitchell, J. consider that the retained juvenile foliage is a Roy. Hort. Soc. 95 (10): 454. 1970. TYPE: generic character - this is an adaptation to the England. Hampshire: Alice Holt Lodge, 1970, specific conditions and occurs in diverse s.d., Mitchell s.n. (holotype, K [not seen]). genera in different parts of the world. Both × Cupressocyparis Dallimore & A.B. Little et al. (2004) have both Callitropsis Jackson (Forestry 11: 3. 1937) and (Xanthocyparis) and Juniperus nested within × Cuprocyparis Farjon (Novon 12: 188. 2002) Cupressus but with different clades of become syn. nov. of Cupressus L. Cupressus for Old World and New World The habitat of the karst limestone ridges at species. They suggest the possibility that the Quanba is extraordinary. The discussion on nesting of Juniperus within Cupressus may ecology of Cupressus vietnamensis in Farjon require the separation of Cupressus into two et al. (2002) gives some idea of the range of separate genera. However, the residual associated plants. However, it does not give a markings of the scales on the cone of full list of the conifers found on these ridges, L. has suggested that the and misidentifies some of those listed. Apart genus was derived from Cupressus. Further from Cupressus vietnamensis, there are: proof of the validity of this suggestion will not argotaenia (C. Presl) Kuntze necessarily require the splitting of Cupressus which forms an understorey . A into separate genera. specimen from this area but lacking the narrow The subsumation of Callitropsis but bright stomatal bands has been described (Xanthocyparis) in Cupressus requires the as Amentotaxus hatuyenensis but is unlikely to following new combinations: be worthy of recognition. Cupressus L. subgenus Xanthocyparis (Farjon & Hiep) Rushforth, comb. et stat. nov.

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Pinus wangii Hu & W. C. Cheng is a five provide the next generation. Preventing any needled or soft pine which is otherwise known felling or harvesting is unlikely to succeed; only from nearby southeast . also just protecting the area is unlikely to be fleuryi (Hickel) de Laub.. This has successful because the habitat is so restricted been confused with Nageia wallichiana (C. there is a risk that species will be lost by Presl) Kuntze which occurs in Cucphuong random failure to regenerate. Perhaps a way national park. The easiest key character is that around this conundrum would be for a certain the leaves of Nageia wallichiana have minimum number of trees, perhaps 50 of each stomatal lines on both surfaces, whereas in species in a given area, to be marked and their Nageia fleuryi they are only found on the felling only permitted when two replacement lower surface (stomata are not very obvious trees can be identified. even with a hand lens!). Pseudotsuga brevifolia W. C. Cheng & L. 3. Fokienia or Pémou K. Fu is sometimes treated as a 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 Podocarpus wangii C. C. Chang. This species in the cladogram based on non-molecular data may be synonymous with Podocarpus pilgeri that Fokienia is not sister to Chamaecyparis; Foxw. from , Papua New Guinea and this cladogram (fig. 4 in Gadek et al., 2002) is the Philippines; Tsuga chinensis (Franch.) E. odd 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 cannot entirely eliminate the possibility that nested within Chamacyparis, between the tree could be Nothotsuga longibracteata (Murray) (W. C. Cheng) Hu ex C. N. Page (syn. Tsuga Parlatore and (Sieb. & longibracteata W. C. Cheng). Tsuga dumosa Zucc.) Endl.. However, when other data, (D. Don) Eichler is found on the Hoanglienson including morphological data was used, range north of Fansipan above the village of Fokienia came out as a sister group to Bankhoang in Laocai province and is the most Chamaeyparis. If the molecular data is easterly occurrence of this otherwise strongly clustering Fokienia with Himalayan species. Chamaecyparis, it questions the validity of the Taxus wallichiana Zucc. aggregate. At non-molecular characters used to separate the present it seems more sensible to use the two genera. predominant aggregate name, rather than Dunn (1908) first described Fokienia Taxus chinensis (Pilg.) Rehd. or Taxus mairei hodginsii but as a species belonging to Lemée & Léveillé. The species is clearly not Cupressus section Chamaecyparis. It was the same as the one from Lamdong province in Henry & Thomas (1911) who proposed the the south of Vietnam which has also been genus Fokienia. They compared it with called Taxus wallichiana, but may be closer to Chamaecyparis lawsoniana and Calocedrus Taxus sumatrana (Warb.) de Laub. macrolepis Kurz. Henry & Thomas's Latin The conservation of these trees is a diagnosis for Fokienia reads "genus novum priority, but the needs of the local H'mong Cupressinearum, inter Libocedrum et people for timber and forest products also Cupressum collocandum; strobili globosi, needs considering. A particular difficulty is squamae peltatae, quam in Cupresso section that trees like Pseudotsuga brevifolia and Chamaecyparis, sed dispermae; semina bialata, Pinus wangii will become useful timber trees alis lateralibus valde inaequalibus, quam in before they are sufficiently mature to cone. Libocedro; folia et habitus Libocedri Thus there is a risk that the adult population macrolepidis. Species unica, Fokienia will be harvested, leaving no parent trees to hodginsii

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Henry et Thomas. "This can be paraphrased as of anthesis may be variable depending upon 'cones like Chamaecyparis but with only two climate - otherwise I must question the seeds, seed wing (and foliage) like Calocedrus accuracy of the statement by Fu, Yu & Farjon macrolepis' - is easily in Wu & Raven (, 4: 69, 1999) separated by the oblong cones with valvate that time is March-April. Apart scales hinged at the base. In the English from conelets around anthesis, I have only discussion Henry & Thomas suggested that the seen, either on a living tree or in herbaria, seed wing was derived from the cone scale, mature autumn cones, not an intermediate one- not integral with the ovule, and that the cones year conelet, as seen in Cupressus or Pinus. took two years to ripen. I have examined the following material of But do these characters hold good, and are Fokienia in the Edinburgh herbarium: R. C. they sufficient to justify a separate genus for Ching 2345, King Yuan, , China; R. Fokienia? C. Ching 2361, ibid; Hodgins, s.n., Foochow, The character of two ovules per scale - , China; J. Linsley Gressit 1740, Tai "squamae…dispermae" - does not separate Yang, , China; Luo Lin-bo 1231, Fokienia from Chamaecyparis. Henry (in Xining County, , China; J. Esquirol Elwes & Henry, 1910, p 1149 [in the 2091, Tuy-sey-kiao, Guizhou, China; Y. publication Chamaecyparis is only treated as a Tsiang 7135, Ping Chow, Guizhou, China; Y. section of Cupressus]) had given for Tsiang 8867, without precise locality, Guizhou, Chamaecyparis "Seeds one to five on each China; E.E. Maire 75, Tie-Tchang-Keou, scale" and gives "Seeds two to five on each Yunnan, China; J. Cavalerie 7663, Kunming scale" for Chamaecyparis lawsoniana (Yunnan-sen), Yunnan, China; K. Rushforth (notwithstanding Henry & Thomas (1911) 7460, Kunming Botanic Garden, Kunming, citing three ovules for Chamaecyparis Yunnan, China; K. Rushforth 137, Baoguoxi, lawsoniana) and "one to two" (sic, surely he Emei Shan, , China; W. T. Tsang meant one or two!) for both Chamaecyparis 27297, Taai Wong Mo Shan, Chuk-phai, Ha- pisifera and (L.) coi, Vietnam; K. Rushforth 3073, Fanxipan, Britton et al. and "two" for Cupressus ridge above Sinchay, Sapa, Laocai, Vietnam; nootkatensis D. Don. Gardner, Thomas & Luu 20, Nam Qua river, The wings on the seeds of Fokenia are Liemphu, Vanban district, Laocai, Vietnam; more pronounced than in any other Gardner, Thomas & Luu 26, route to Ta Xa Chamaecyparis or Cupressus, and resemble mountain, Liemphu, Vanban district, Laocai, those of Calocedrus. However, it is unclear Vietnam; S. Ickert-Bond, R. Bond, Hiep & that this is a generic character. In Pinus, there Phan Ke Loc 202, Paco, Maichau district, are species in the same section of the genus Hoabinh, Vietnam; Poilane 6527, Massif de la with either rudimentary rim-like wings or large Mère et l’Enfant, north of Ninhhoa, Nhatrang, functional wings. In Betula, different parts of Khanhhoa, Vietnam; N. D. T. Luu & N. V. the genus may have large wings a single cell in Chi 2, Honchang, Phuocbinh, Ninhthuan, thickness or short, rim-like wings several cells Vietnam; N. D. T. Luu & N. V. Chi 234, thick. In Cupressus Little et al. (2004, p. 1875) Bidoup, Lacduong, Lamdong, Vietnam; N. D. note variation, e.g. with the wings of some T. Luu & N. V. Chi 235, ibid.; N. D. T. Luu & species being “highly reduced”. In short, I do N. V. Chi 236, ibid. not see this as a generic character. My observations lead me to the The cones allegedly taking two years to conclusion that the cones ripen in the autumn ripen is at variance with Chamaecyparis as following anthesis, and thus do not take two generally treated today. However, I have years to mature. In this context it is interesting observed Fokienia in China and Vietnam and to note that Gadek et al. (2000) for their non- in cultivation in England and examined the molecular character 44 "Seed maturation: in material at Edinburgh. In Yunnan and northern the first year; in the second year or later" have Vietnam I have observed the conelets reaching both Chamaecyparis and Fokienia as maturing anthesis during the autumn but the actual time 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 this may merely be an error on their part. on Japan and with no less than two The characters given in the above table species each. Various authorities have show Fokienia either within the range attempted to resolve the issue, such as Wang et recorded for Chamaecyparis (e.g. number of al. (2003) suggesting an offshore migration microsporangia and pollen sacs) or from North America to Japan and Taiwan overlapping (e.g. number of cones scales in the bypassing the Asian mainland (but female cone). unfortunately did not include Chamaecyparis Gadek et al. (2000) (if we exclude hodginsii in their analysis), and others have Cupressus nootkatensis) give only three non- postulated Cupressus funebris as belonging to molecular characters to separate Chamaecyparis and thus being the missing Chamaecyparis and Fokienia (see Figure 5). mainland species. However, treating Dunn's These are "5. Transverse walls of vertical species as Chamaecyparis hodginsii resolves parenchyma with small nodules the issue - this is basically Dunn's treatment, it (Chamaecyparis); with large nodules is just that he subsumed Chamaecyparis in (Fokienia)", "27. Accumulation of nootkatin in Cupressus. the heartwood: absent (Fokienia); present Chamaecyparis hodginsii has a (Chamaecyparis)" and "36. Number of ovules distribution from Zhejiang and Fujian across to per cone scale: two (Fokienia); more than two southeast Sichuan and then south to Lamdong (Chamaecyparis)". The last character clearly and Ninhthuan provinces in southern Vietnam. does not separate Fokienia and In Vietnam it occurs in warm temperate to Chamaecyparis, and is not correct for subtropical montane forest. Chamaecyparis. The other two characters, if Acknowledgements: I would like to thank correct (and only two species of the Curators of the Herbaria at Edinburgh, Chamaecyparis feature in their analysis, which Paris and the Arnold Arboretum for access to does not include the type species, their collections. I would also like to thank Dr Chamaecyparis thyoides, do not warrant H. McAllister and an anonymous reader for separate generic status for Fokienia. comments upon the text, and Dr Tran Cong I conclude, therefore, that the morpholo- Khanh and Do Thuy Linh. gical characters do not adequately differentiate Fokienia from Chamaecyparis and consider, BIBLIOGRAPHY as indicated by molecular data, that the genus Fokienia is not distinct from Chamaecyparis. 1. Chevalier A., 1919: Bull. Écon. Indochine. The following new combination is New ser., 137: 165-166. required in Chamaecyparis Spach: 2. Dunn S. T., 1908: J. Linn. Soc., Bot., 38: Chamaecyparis hodginsii (Dunn) 367. Rushforth, comb. nov. Basionym Cupressus 3. Elwes H. J. & A. H. Henry, 1910: The hodginsii Dunn, J. Linn. Soc. Bot. 38: 367, Trees of Great Britain and Ireland. Volume 1908. Syn. nov. Fokienia hodginsii (Dunn) A. 5. Edinburgh. Henry & H. H. Thomas, Gard. Chron., ser. 3, 4. Farjon A., 1998: World Checklist and 49:67, 1911. Type: China, Fujian, about Bibliography of Conifers. Royal Botanic Yenping at 2000 feet (600 m), S. T. Dunn Gardens, Kew. 3505 (holotype Hongkong Herb. [non vidi]). 5. Farjon A. et al., 2002: A new Genus and I do not see any justification for treating Species in Cupressaceae (Coniferales) from Fokienia kawaii Hayata (= F. hodgsinii var. Northern Vietnam, Xanthocyparis kawaii (Hayata) Silba) and Fokienia maclurei vietnamensis. Novon, 12: 179-189. Merrill as other than synonyms of 6. Frankis M. P., 1993: Conif. Soc. Austral. Chamaecyparis hodginsii. Newslett., 12: 9-10. The treatment of Fokienia as part of Chamaecyparis resolves one botanical

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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. Little 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: Cây Science Press, and Missouri lá kim Việt Nam. Nxb. Thế Giới. Botanical Garden Press, St. Louis.

GHI C Ọ Ở I

KEITH RUSHFORTH

i iết ến ph n loại c c lo i b n a trong h upressaceae ở iệt am. Trước y, m t lo i thu c chi Cupressus ở t nh ạng ơn n ược c nh l Cupressus torulosa, nhưng nay t n ng c a n l Cupressus tonkinensis Silba. Chi Xanthocyparis ược chuy n th nh m t ph n chi c a Cupressus th nh l p m t t hợp tên mới l Cupressus vietnamensis (Farjon & Hiep) Rushforth. Chi Fokienia h ng t ch h i chi Chamaecyparis n n th m m t t hợp t n moi l Chamaecyparis hodginsii unn ush orth. i iết c ng b n b o t n c c lo i th ng n ở iệt am.

Ng : 13-3-2007

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