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FOC | Family List | FOC Vol. 25 | Orchidaceae | Disperis

1. Disperis neilgherrensis Wight, Icon. Pl. Ind. Orient. 5: t. 1719. 1851.

双袋兰 shuang dai lan

Disperis javanica J. J. Smith; D. lantauensis S. Y. Hu; D. orientalis Fukuyama; D. palawensis (Tuyama) Tuyama; D. papuana Micholitz & Kraenzlin; D. philippinensis Schlechter; D. rhodoneura Schlechter; D. siamensis Rolfe ex Downie; D. teleplana F. Maekawa; D. walkerae H. G. Reichenbach; D. zeylanica Trimen; D. zeylanica var. neilgherrensis (Wight) Pradhan; Pantlingia palawensis (Tuyama) Rauschert; Stigmatodactylus palawensis Tuyama.

Plants 4-17 cm tall. Tuber ovoid, 0.5-1(-2) cm, puberulent. Subterranean stem with a few sheathing cataphylls. Stem dark green to purple, terete, 3-15 cm, with 1-3 cauline leaves usually above middle. Leaves abaxially purplish, adaxially green, sometimes with large dark green patches, ovate to cordate, 4-17 × 4-13 mm, with anastomosing venation, base directly sheathing stem, apex acute. Rachis 1-3-flowered, pinkish green, 1-1.5 cm; floral bracts ovate, 4-10 × 2-5 mm. Flowers pink to pale purple; pedicel and ovary cylindric, 8-12 mm. Dorsal sepal forming a hood with petals, erect, lanceolate, 4-7 × 1-1.5 mm, 1-veined, apex acute; lateral sepals pendulous, obliquely ovate, 5-7 × ca. 3.5 mm, connate at base, with conic sac at center. Petals connivent with dorsal sepal, obliquely obovate, 5-6 × 2-3.5 mm; lip whitish, ca. 5 mm, consisting of a narrow claw at base and a narrowly 3-lobed blade, cross-shaped when expanded; claw adnate to base of column, erect, 1-2 mm; lateral lobes spreading at right angles to mid-lobe, adaxially yellow, linear, ca. 2.5 mm, minutely hairy; mid-lobe pendulous, linear, ca. 2 mm, terminating in a swollen papillose appendage. Column ca. 1.2 mm; rostellum rhomboid, stipitate at base, with 2 curved or coiled ribbonlike arms projecting in opposite directions; pollinia attached to apex of rostellum arms; stigma lobes separate. Capsule ca. 14 × 2.5 mm. Fl. May-Aug.

Woodlands, scrub; 200-900 m. Hong Kong, S Taiwan [India, Indonesia, Japan (Ryukyu Islands), New Guinea, Philippines, Sri Lanka, Thailand; SW Pacific islands].


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