短序隔距兰 duan xu ge ju lan

Echioglossum striatum H. G. Reichenbach, Gard. Chron., n.s., 12: 390. 1879; Cleisostoma brevipes J. D. Hooker; Raciborskanthos striatus (H. G. Reichenbach) Szlachetko; Sarcanthus brevipes (J. D. Hooker) J. J. Smith; S. striatus (H. G. Reichenbach) J. J. Smith.

Stems cylindric, to 30 cm, ca. 7 mm in diam., internodes ca. 2 cm, many leaved. Leaves flat, narrowly oblong-lanceolate, usually 7-11 × ca. 1.5 cm, fleshy, acute. Inflorescence arising from middle or above on stem, pendulous, axillary, 2-6 cm, unbranched, densely many flowered; peduncle with several, fleshy, scalelike sheaths; floral bracts broadly ovate, 2-3 mm, fleshy. Flowers opening widely, fleshy; sepals and petals orange-yellow with purple stripes, lip yellowish, mid-lobe purple; pedicel and ovary longer than floral bracts. Dorsal sepal suboblong, cymbiform, ca. 6 × 3 mm, obtuse; lateral sepals slightly oblique, ovate, ca. as large as dorsal sepal. Petals suboblong, ca. 5 × 2.5 mm, obtuse; lip lateral lobes falcate-triangular, acute; mid-lobe sagittate-triangular, fleshy, narrowed and deeply divided into 2 tails, with 2 backward triangular basal lobules, adaxially with a longitudinal fleshy lamella; spur perpendicular to ovary, short, interior longitudinally septate, with a back wall callus; callus entire, laterally compressed, basal half triangular and papillate. Column ca. 3 mm; rostellum ligulate, fleshy, extending beyond column wing; anther cap elongate, broadly emarginate; stipe oblanceolate, geniculate-folded at base, margin revolute; viscidium crescent-shaped, large. Fl. Jun. 2n = 38.

Epiphytic on tree trunks in broad-leaved evergreen forests; 500-1600 m. SW Guangxi, Hainan, SE to W Yunnan [NE India, Malaysia (Peninsular), Thailand, Vietnam].