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Flora of Taiwan | Family List | Orchidaceae

Luisia Gaud.

金釵蘭屬

Epiphytic herbs. Stems tufted, slender, terete, rigid, surrounded by closely appressed tubular sheaths of leaf. Leaves well-spaced, terete, slender, articulated with sheath at base. Racemes lateral, few-flowered; rachis thickened. Flowers fleshy, perianth spreading; sepals free, similar, lateral ones often keeled; petals similar to sepals or +/- longer and narrower; lip sessile, from base of column, not movable, fleshy, base concave or shallowly saccate, usually 3-lobed, lateral lobes often erect, midlobe larger, often sulcate or grooved longitudinally, entire or with small lobules at apex; column thick, without foot; anther terminal, operculate; pollinia 2, waxy, subglobose, porate or short cleft, connected by elastic thread to broad stipe, viscidium perpendicular to stipe; stigma entire, broad, concave; rostellum broad.

About 50 species, from Korea, Japan, the Ryukyus, through China, the Himalaya and southeast Asia, to Papua New Guinea and New Caledonia. Three species in Taiwan.


KEY TO SPECIES

1 Petals linear, 2 mm wide; midlobe of lip cordate, without lobes at apex.   Luisia cordata
+ Petals oblong, more than 4 mm wide; midlobe of lip not cordate, with minute lobes at apex.   (2)
       
2 (1) Leaves 10-20 cm long, 2-3 mm in diam.; lateral sepals nearly equal to or larger than dorsal sepal, 8-12 mm long; lip 10-14 mm long, yellowish green, with brownish purple stripes or spots, surface nearly smooth.   Luisia teres
+ Leaves 6-10 cm long, 2.5-4 mm in diam,; lateral sepals shorter than dorsal sepal, 12-16 mm long; lip 13-18 mm long; almost entirely dark purple, surface distinctly reticulate sulcate.   Luisia megasepala

Lower Taxa

Related Synonym(s):


 

Related Objects  

Flora of China  
  • Luisia.pdf
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