广东石豆兰 Bulbophyllum kwangtungense

中文名(Chinese Name):广东石豆兰
学名(Scientific Name):Bulbophyllum kwangtungense Schltr.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Bulbophyllum radiatum Lindl.:Rolfe
科属(Family & Genus):兰科(Orchidaceae)石豆兰属
形态特征(Description):根状茎粗约2毫米,当年生的常被筒状鞘,在每相隔2-7厘米处生1个假鳞茎。根出自生有假鳞茎的根状茎节上。假鳞茎直立,圆柱状,长1-2.5厘米,中部粗2-5毫米,顶生1枚叶,幼时被膜质鞘。叶革质,长圆形,通常长约2.5厘米,最长达4.7厘米,中部宽5-14毫米,先端圆钝并且稍凹入,基部具长1-2毫米的柄。花葶1个,从假鳞茎基部或靠近假鳞茎基部的根状茎节上发出,直立,纤细,远高出叶外,长达9.5厘米,总状花序缩短呈伞状,具2-4 (-7) 朵花;花序柄粗约0.5毫米,疏生3-5枚鞘;鞘膜质,筒状,长约5毫米,紧抱于花序柄;花苞片狭披针形,比花梗连同子房短或有时稍长;花淡黄色;萼片离生,狭披针形,长8-10毫米,基部上方宽1-1.3毫米,先端长渐尖,中部以上(约占整个萼片长的3/5)两侧边缘内卷,具3条脉;侧萼片比中萼片稍长,基部约1/5-2/5贴生于蕊柱足上,萼囊很不明显;花瓣狭卵状披针形,长4-5毫米,中部宽约0.4毫米,逐渐向先端变狭,先端长渐尖,具1条脉或不明显的3条脉,仅中肋到达先端,边缘全缘;唇瓣肉质,狭披针形,向外伸展,长约1.5毫米,中部宽0.4毫米,先端钝,中部以下具凹槽,上面具2-3条小的龙骨脊,其在唇瓣中部以上汇合成1条粗厚的脊;蕊柱长约0.5毫米;蕊柱齿牙齿状,长约0.2毫米;蕊柱足长约0.5毫米,其分离部分长约0.1毫米;药帽前端稍伸长,先端截形并且多少向上翘起,上面密生细乳突。花期5-8月。
分布(Distribution):产浙江、福建、江西、湖北、湖南、广东、香港、广西、贵州、云南。通常生于海拔约800米的山坡林下岩石上。
用途(Use):
引自中国植物志英文版:FOC Vol. 25 Page 411, 414
Bulbophyllum kwangtungense Schlechter, Repert. Spec. Nov. Regni Veg. 19: 381. 1924.
广东石豆兰 guang dong shi dou lan| Orchidaceae  | Bulbophyllum
Rhizome creeping or straggling, ca. 2 mm in diam., rooting from nodes of rhizome and base of pseudobulbs, roots spreading. Pseudobulbs 2-7 cm apart from each other, cylindric, 1-2.5 cm, 2-5 mm in diam., with a terminal leaf. Petiole 1-2 mm; leaf blade oblong, usually 2.5-4.7 × 0.5-1.4 cm, leathery, apex obtuse-rounded and slightly emarginate. Scape from base of pseudobulb or node of rhizome, erect, to 9.5 cm, slender; raceme shortened, umbel-like, 2-4(-7)-flowered; peduncle ca. 0.5 mm in diam., sparsely with 3-5 narrowly tubular sheaths 6-10 mm; floral bracts narrowly lanceolate, ca. 2 mm. Pedicel and ovary ca. 2 mm. Flowers pale yellow. Sepals free, narrowly lanceolate, 8-10 × 1-1.3 mm, apical ca. 3/5 length of margins incurved, apex long acuminate; lateral sepals often slightly longer than dorsal sepal, 1/5-2/5 width of their base adnate to column foot; mentum inconspicuous. Petals narrowly ovate-lanceolate, 4-5 × ca. 0.4 mm, entire, long acuminate; lip narrowly lanceolate, ca. 1.5 × 0.4 mm, fleshy, grooved in basal half, adaxially with 2 or 3 ridges fused halfway to form a thickened ridge, apex obtuse. Column ca. 0.5 mm; stelidia ca. 0.2 mm; foot ca. 0.5 mm, with free part ca. 0.1 mm; anther cap densely minutely papillate. Fl. May-Aug.
● Rocks in forests; 800-1200 m. N Fujian, Guangdong, C and N Guangxi, Guizhou, Hubei, SW Hunan, Jiangxi, S Yunnan, Zhejiang.
广东石豆兰 Bulbophyllum kwangtungense(责任编辑:徐晔春)

顶一下[2]

踩一下[0]