滇越金线兰Anoectochilus chapaensis

中文名(Chinese Name):滇越金线兰
学名(Scientific Name):Anoectochilus chapaensis Gagnep.
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科属(Family & Genus):兰科(Orchidaceae)开唇兰属
形态特征(Description):植株高12-18厘米。根状茎伸长,匍匐,肉质,具节,节上生根。茎上升或直立,圆柱形,直径2.5-3毫米,无毛,具4-5枚叶。叶片偏斜的卵形,上面黑绿色,具金红色、有绢丝光泽美丽的网脉,背面淡绿色,长2-5厘米,宽1.5-3.5厘米,先端急尖,基部钝,两侧不等宽,骤狭成柄;叶柄长8-10毫米,基部扩大成抱茎的鞘。总状花序具2-7朵较疏生的花,长2-5厘米,花序轴被短柔毛;花序梗较长,被短柔毛,具2-3枚疏生淡红色的鞘状苞片;花苞片淡红色,卵状披针形,长6-10毫米,先端渐尖,背面被短柔毛,较子房短;子房圆柱形,不扭转,被短柔毛,连花梗长10-13毫米;花较大,白色,长达2.5厘米,不倒置(唇瓣位于上方);萼片背面被短柔毛,具1脉,中萼片卵形,凹陷呈舟状,长6毫米,宽3.5毫米,先端渐尖,与花瓣粘合呈兜状;侧萼片偏斜的卵状长圆形,张开,长6毫米,宽3毫米,向先端渐狭,钝;花瓣斜歪的半卵形,镰状,较萼片薄,长6毫米,中部宽3毫米,基部收狭,前部向先端渐狭成尾状且向内弯,先端稍钝,具1脉,两侧极不等,外侧较其内侧宽很多;唇瓣上举,呈Y字形,长10-12毫米,基部具圆锥状距,前部明显扩大成2裂,裂片倒卵状三角形,长8-9毫米,顶部宽6-7毫米,先端圆钝,边缘具细圆齿,中部收狭成长5-6毫米、宽约3毫米的爪,爪的前部两侧各具2条短流苏,而后部两侧各具1枚长方形其边缘具细钝齿的片;距上举,长4-5毫米,基部宽约2.5毫米,末端钝尖,内面具2枚胼胝体,胼胝体位于距的中部;蕊柱短,前面两侧各具1枚宽的附属物;蕊喙直立,长圆形,2裂,叉状;花药三角形,长3毫米;柱头2个,离生,位于蕊喙的基部两侧。花期7-8月。
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引自中国植物志英文版:FOC Vol. 25 Page 77, 79      
Anoectochilus chapaensis Gagnepain, Bull. Mus. Natl. Hist. Nat., sér. 2. 3: 679. 1931.
滇越金线兰 dian yue jin xian lan| Orchidaceae  | Anoectochilus
Plants 12-18 cm tall. Stem ascending or erect, 2.5-3 mm in diam., 4- or 5-leaved. Leaves abaxially pale green, adaxially blackish green with golden-red venation, ovate, oblique, 2-5 × 1.5-3.5 cm, apex acute; petiole-like base and tubular sheath 0.8-1.6 cm. Peduncle 8-11 cm, with 2 or 3 pale red sheathing sterile bracts; rachis 2-5 cm, 2-7-flowered; floral bracts pale red, ovate-lanceolate, 6-10 mm, shorter than ovary, outer surface pubescent, apex acuminate. Flowers erect, not resupinate, white; ovary and pedicel narrowly cylindric, not twisted, 10-13 mm, pubescent. Sepals pubescent on outer surface, 1-veined; dorsal sepal ovate, cymbiform, ca. 6 × 3.5 mm, apex acuminate; lateral sepals ovate-oblong, ca. 6 × 3 mm, apex obtuse. Petals ovate, strongly oblique, falcate, ca. 6 × 3 mm, 1-veined, apex caudate and incurved; lip white, Y-shaped, 10-12 mm; hypochile short; mesochile 5-6 × ca. 3 mm; flanges oblong, pectinate, divided into 3 or 4 narrow teeth; epichile longitudinally dilated, 2-lobed; lobes diverging widely, obovate, 8-9 × 6-7 mm, margin crenulate, apex truncate; spur conic, 4-5 mm, apex obtuse, containing 2 calli. Column short, with 2 broad lamellate wings. Fl. Jul-Aug.
Shaded humid places in dense forests; 1300-1400 m. SE Yunnan [N Vietnam].
滇越金线兰Anoectochilus chapaensis

滇越金线兰Anoectochilus chapaensis

滇越金线兰Anoectochilus chapaensis(责任编辑:徐晔春)

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