无量山石豆兰, 中国兰科植物一新记录种

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  摘要: 報道了中国兰科植物一新记录种,即无量山石豆兰(Bulbophyllum pinicola)。对其进行了特征描述并与相似种Bulbophyllum acutiflorum做了对比,并提供了彩色照片。无量山石豆兰的萼片披针形,先端渐尖,花瓣三角状披针形,先端渐尖,唇瓣稍向外下弯而易与相似种区分。
  关键词: 新记录, 兰科, 无量山石豆兰, 中国, 命名法
  Bulbophyllum Thouras (1822: tab.3), is one of the largest genera in Orchidaceae, consisting of 1867 species (Chase et al, 2015; Vermeulen et al, 2014). There are approximate 127 species in China (including Drymoda, Monomeria, Trias and Sunipia), of which 40 species are endemic to China(Chen & Vermeulen, 2009, Li et al, 2009, 2011, 2013, 2015; Wei et al, 2010; Liu et al, 2015; Liu & Gao, 2016; Yu et al, 2015; Zhou & Jin, 2015).
  Based on our field work in Jingdong County, YunNote: A. Habitat; B. Inflorescence; C. Pedicel and ovary with column and lip; D. Flower (a. Dorsal sepal, b. Lateral sepals, c. Petals,
  d. Pedicel and ovary with column and lip, e. Floral bract); E. Flower (face view).
  Fig. 1Bulbophyllum pinicola (Edited by LI Jianwu, photographed by YE Deping)
  nan Province, China during 2014—2016, a new record of Bulbophyllum was found and now reported here.
  Bulbophyllum pinicola Gagnep., Bull. Mus. Natl. Hist. Nat., sér. II. ii: 146. 1930. —— Bulbophyllum pinicolum Gagnep.
  Bulbophyllum pinicola (Fig. 1)
  Epiphytic. Rhizome creeping, ca. 2 mm in diam.; pseudobulbs 1.0-1.5 cm apart from each other along the rhizome, subglobular, 1.0-1.2 cm, apex with one leaf. Leaf blade suboblong, 2.7-3.5 by 1.0-1.1 cm, 1veined, vein concave adaxially, abaxialy convex, apex unequally bilobed, lobiis rounded, base contracted into petiole, petiole ca. 3 mm long. Scape lateral from the base of pseudobulb, 10-11 cm long, glabrous, umbel-like with 6-8 flowers. Peduncle with 2-3 sheaths, sheath cannular, 5-8 mm long. Floral bracts lanceolate, 3.0 by 0.8 mm, apex acuminate; pedicel and ovary 20-22 mm long; flowers widely open, yellowish-white. Dorsal sepal lanceolate, 20-21 by 3 mm, apex acuminate; lateral sepals lanceolate, 22-23 by 3 mm, apex acuminate. Petals triangular lanceolate, 13-14 by 2.0-2.3 mm, apex acuminate. Lip ligulate, 3.5 by 1.0 mm, base attached to end of column foot by an immobile joint, apex round. Column stout, ca. 2 mm long, column foot ca. 2.5 mm long. Anther cap galeiform; pollinia 2.
  China. Yunnan : Pu’er, Jingdong, alt. 1 700 m, 21 DEC 2016, epiphytic on tree or rocks, wet valley in broad-leaved evergreen forests. LI Jianwu 4590 (HITBC!).
  Distribution:China (Yunnan), Vietnam and Cambodia.   Bulbophyllum pinicola was often spelled B. pinicolum (Gagnep. 1930; Aver. 2006), according to the International Code of Boanical Nomenclature (McNeill et al, 2012), we report it as B. pinicola here.
  B. pinicola is similar to B. albidum (wight) Hook. f. (Gagnep. 1930), which is a synonym of B. acutiflorum A. Rich., but can be easily distinguished from the later by having sepals lanceolate and having acuminate apex (sepals triangular-lanceolate, apex of dorsal sepal acute in B. acutiflorum), petals triangular-lanceolate, apex acuminate (petals ovate, apex acute in B. acutiflorum), lip slightly excurvate (lip strongly arcuate in B. acutiflorum).
  The Chinese name “無量山石豆兰 Wu Liang Shan Shi Dou Lan” is named after site where it was found, Wu Liang Mountain, a famous mountain at Pu’er City, China.
  AcknowledgmentsWe are grateful to Dr. JIN Xiaohua for his critical review of the manuscript, to Prof. André SCHUITEMAN (Kew) for his help in identification, to PU Kairong for his help in the field work.
  References:
  AVERYANOV L, 2006. Rare species of Orchids (Orchidaceae) in the flora of Vietman [J]. Turczaninowia, 9(3): 48-89.
  CHASE MW, CAMERON KM, FREUDENSTEIN JV, et al, 2015. An updated classification of Orchidaceae [J]. Bot J Linn Soc, 177: 151-174.
  CHEN SC, VERMEULEN JJ, 2009. Bulbophyllum [M]// WU ZY, RAVEN PH, HONG DY. Flora of China. Beijing: Science Press, 25: 404-440. [陈心启, Vermeulen JJ, 2009. 石豆兰属 [M] // 中国植物志. 北京: 科学出版社, 25: 404-440.]
  GAGNEPAIN MF, 1930. Bulbophyllum Nouveaux D’ Indochine [J]. Bull Muséum Nat D’Histoire Naturelle. Sér II. ii: 143-148.
  LI JW, YE DP, LIU Q, 2013. Two new records of Orchid from China [J]. Plant Divers Resourc, 35(2): 128-130. [李剑武, 叶德平, 刘强, 等, 2013. 中国兰科植物二新记录种 [J]. 植物分类与资源学报, 35(2):128-130.]
  LI JW, YE DP, LIU JX, et al, 2015. Orchids Newly Recorded to China [J]. Plant Divers Resourc, 37(3): 246-252. [李剑武, 叶德平, 刘景星, 等, 2015. 中国兰科植物新资料 [J]. 植物分类与资源学报, 37(3): 246-252.]
  LI L, YE DP, LI JW, et al, 2009. A newly recorded species and a new synonym of Orchidaceae from China [J]. J Trop Subtrop Bot, 17(3): 295-297. [李琳, 叶德平, 李剑武, 等, 2009. 中国兰科植物一新记录种及一新异名 [J]. 热带亚热带植物学报, 17(3):295-297.]
  LI L, YE DP, LI JW, et al, 2011. Two newly recorded species of Bulbophyllum (Orchidaceae) from China [J]. J Trop Subtrop Bot, 19(2): 149-151. [李琳, 叶德平, 李剑武, 等, 2011. 中国石豆兰属二新记录种 [J]. 热带亚热带植物学报, 19(2):149-151.]
  LIU Q, LI JW, JIN XH, et al, 2015. A new species of Bulbophyllum (Orchidaceae, Epidendroideae, Dendrobiinae) from Yunnan, China [J]. Phytotaxa, 236(3): 287-290.   LIU Q, GAO JY, 2016. New orchids record in the flora of China [J]. Curr Sci, 110(11): 2064-2066.
  MCNEILL J, BARRIE FR, BUCK WR, et al, 2012. International code of nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011 [Z]. Regnum Vegetabile 154. Knigstein: koeltz Scientific Books.
  WEI LM, LANG KY, YU DL, 2010. Bulbophyllum xylophyllum, a new record of orchid species from China [J]. Guihaia, 30(4): 446-447. [魏魯明, 郞楷永, 余登利, 2010. 革叶石豆兰――中国兰科植物一新记录种 [J]. 广西植物, 30(4):446-447.]
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