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FOC | Family List | FOC Vol. 25 | Orchidaceae

180. Aerides Loureiro, Fl. Cochinch. 2: 525. 1790.

指甲兰属 zhi jia lan shu

Authors: Xinqi Chen & Jeffrey J. Wood

Herbs, epiphytic, medium-sized, coarse, monopodial, with many thick roots. Stems ascending, short to elongate, often stout, enclosed by leaf sheaths, with many nodes, leafy. Leaves distichous, linear-oblong to terete, leathery, slightly fleshy, base jointed and sheathing, apex bilobed. Inflorescence lateral, pendulous, variable, racemose or paniculate, usually densely many flowered. Flowers showy, medium-sized. Sepals and petals similar, broad, spreading; lateral sepals decurrent on column foot. Petals smaller than sepals; lip attached to end of column foot, usually immovable, spurred, 3-lobed; lateral lobes decurrent on column, erect; mid-lobe large or small, often erose; spur narrowly conic or horn-shaped, bent forward, usually with swellings or calli inside. Column elongate, often broadened at apex, with a short or long foot; rostellum short or long, bifid; anther 2-locular, ± beaked; pollinia waxy, 2, subglobose, grooved, attached by a long, slender stipe to a solitary, semicircular viscidium.

About 20 species: Sri Lanka, India, Nepal, Bhutan, Myanmar, China, Thailand, Indochina, and Malaysia to the Philippines and Indonesia; five species (one endemic) in China.

1 Inflorescence laxly 3-8(-10)-flowered   (2)
+ Inflorescence densely 15-flowered or more   (3)
2 (1) Spur ca. 10 mm; mid-lobe of lip flabellate; column foot ca. 3 mm.   4 A. flabellata
+ Spur 3-4 mm; mid-lobe of lip broadly ovate; column foot 10-12 mm.   5 A. falcata
3 (1) Mid-lobe of lip 12-14 mm wide, subovate, much larger than lateral lobes; spur ca. 5 mm.   1 A. rosea
+ Mid-lobe of lip 3-5 mm wide, much smaller than lateral lobes; spur ca. 3.5 mm or ca. 10 mm   (4)
4 (3) Spur ca. 10 mm.   2 A. odorata
+ Spur ca. 3.5 mm.   3 A. orthocentra

Lower Taxa


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