《中国植物志》|| 兰科 ORCHIDACEAE ||指甲兰亚族 Subtrib. Aeridinae Pfitz. ||蜘蛛兰属 Arachnis Bl.

146．蜘蛛兰属 Arachnis Bl.
Bl., Bijdr. 8: 365. 1825; K. W. Tan in Selbyana 1 (1): 1-15. 1975, et 1 (4): 365-373. 1976; Seidenf. in Opera Bot. 95: 140-143. 1988.
附生草本。茎伸长，坚实而粗壮，分枝或不分枝，具多数二列的叶。叶稍肉质，扁平而狭长，先端浅2裂，基部具关节和抱茎的鞘。花序侧生，斜出或下弯，通常比叶长；花序柄和花序轴细长，分枝或不分枝；总状花序或圆锥花序具少数至多数花，花大或中等大，开展，肉质；萼片和花瓣相似，狭窄，通常向先端变宽；侧萼片和花瓣常向下弯曲；唇瓣基部以1个可动关节着生于蕊柱足末端，3裂；侧裂片小，直立；中裂片较大，厚肉质，上面中央通常具1条龙骨状的脊；距短钝，圆锥形，通常近末端稍向后弯曲；蕊柱粗短，具短的蕊柱足；花粉团蜡质，4个，几乎等大，每2个成一对；粘盘柄卵状三角形或近梨形；粘盘大，比粘盘柄宽或等宽。
约13种，分布于东南亚至新几内亚岛和太平洋一些岛屿。我国仅1种，产于南方热带地区。
本属模式种：Arachnis moschifera Bl. (A. flosaeris (L.) Rchb. f.)

《云南植物志》|| 兰科 Orchidaceae ||指甲兰亚族 Subtrib. Aeridinae Pfitz. ||蜘蛛兰属 Arachnis Bl.

116.蜘蛛兰属 Arachnis Bl.
附生草本。茎伸长，粗壮，坚实而粗壮，分枝或不分枝，具多数二列的叶。叶稍肉质，扁平而狭长，先端浅2裂，基部具关节和抱茎的鞘。花序侧生，斜出或下弯，通常比叶长；花序柄和花序轴细长，分枝或不分枝；总状花序或圆锥花序具少数至多数花，花大或中等大，开展，肉质；萼片和花瓣相似，狭窄，通常向先端变宽；侧萼片和花瓣常向下弯曲；唇瓣基部以1个可活动的关节着生于蕊柱足末端，3裂；侧裂片小，直立；中裂片较大，厚肉质，上面中央通常具1条龙骨状的脊；距短钝，圆锥形，通常近末央稍向后弯曲；蕊柱粗短，具短的蕊柱足；花粉团蜡质，4个，几乎等大，每2个成一对；黏盘柄卵状三角形或近梨形，比黏盘柄宽或等宽。
全属约13种。分布于东南亚至新几内亚岛和太平洋一些岛屿。我国仅1种，云南也产。

《Flora of China》|| Orchidaceae || ||蜘蛛兰属 Arachnis

167. Arachnis Blume, Bijdr. 365. 1825.

蜘蛛兰属 zhi zhu lan shu

Authors: Xinqi Chen & Jeffrey J. Wood

Arachnanthe Blume; Arhynchium Lindley & Paxton.

Herbs, epiphytic, robust, monopodial. Stems scrambling, elongate, often to several meters, branched, leafy. Leaves oblong, rigid, somewhat fleshy or leathery, base sheathing, apex bilobed. Inflorescence lateral, ascending or pendulous, rigid, often long and branched, few to many flowered; peduncle and rachis slender. Flowers fragrant, resupinate, often large and showy, usually widely opening, often spiderlike. Sepals and petals similar, spreading, narrowly oblong to linear, usually widened toward apex; lateral sepals and petals often falcate-curved. Lip short, 3-lobed, jointed to column foot by a short movable strap, base saccate or spurred; mid-lobe with a raised, central ridge or callus; column short, stout; stipe short, broad; viscidium broadly ovate; pollinia 4, appearing as 2 unequal masses, waxy.

About 13 species: from NE India and mainland Asia to Indonesia, New Guinea, and the Pacific islands; one species in China.