高士佛羊耳蒜

Epiphytes, without rhizome. Pseudobulbs in one row, elongate ovoid or clavate, tapering upward, 2.5-5.5 cm long, 1.2-2 cm wide, more or less bilaterally compressed, with 3 raised ridges on each side, covered by a few membranaceous sheaths when young. Leaves 2, arising at different level from apex of pseudobulb, linear-oblanceolate, 10-22 cm long, 2-2.5 cm wide, apex acute, base cuneate, thin coriaceous, mainly 7-nerved. Peduncle produced from apex of pseudobulb, erect, bilaterally compressed, winged, 7-10 cm long, rachis ca. 10 cm long; bracts linear, 7-10 mm long; pedicel and ovary 7-8 mm long, often with small processes on surface. Flowers numerous, densely arranged, pale yellow or nearly white; dorsal sepal lanceolate, 3-5 mm long, 1 mm wide, acute at apex; lateral sepals ovate-lanceolate, 3 mm long, 1.5 mm wide, slightly oblique, acute at apex, truncate at base; petals linear, 3 mm long, 0.3 mm wide; lip ovate, 3 mm long, 2 mm wide, obscurely 3-lobed, lateral lobes erect, thick, central lobe downcurved, slightly thickened near base; column white, 2.5 mm long, curved, slightly dilated near base, with 2 small lateral wings apically; anther oval, 0.5 mm long; pollinia ovoid, 0.4 mm long. Capsules obovate, 3-4 mm long, 2.5 mm in diam. Seeds slender fusiform, 0.2-0.25 mm long.

PINGTUNG: Luliaochi, Su 6844*; Su & Chen 7102.

Endemic, on trees in evergreen forests on the eastern side of the Hengchun Peninsula, at 50 to 400 m.