Flora of China
  FOC Vol.25 (2009)              | Family List  Orchidaceae  PDF Arachnis  PDF   | Link Font:+ Big | - Small
   167. Arachnis  Blume Bijdr. 365. 1825.
蜘蛛兰属   zhi zhu lan shu
Authors: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.

   Lower Taxon
  • Arachnis labrosa    窄唇蜘蛛兰
  • Arachnis labrosa var. labrosa    窄唇蜘蛛兰(原变种)
  • Arachnis labrosa var. zhaoi    赵氏蜘蛛兰