台湾美冠兰 tai wan mei guan lan

Bletia bicallosa D. Don, Prodr. Fl. Nepal. 30. 1825; Cyrtopera bicarinata Lindley; C. candida Lindley; C. papuana Kraenzlin (1898), not Ridley (1886); Eulophia bicallosa var. major (King & Pantling) Pradhan; E. bicarinata (Lindley) J. D. Hooker; E. bicarinata var. major King & Pantling; E. brachycentra Hayata; E. candida (Lindley) J. D. Hooker; E. fitzalanii F. Mueller; E. merrillii Ames; E. papuana Schlechter (1905), not F. M. Bailey (1907), nor (Ridley) J. J. Smith (1909); E. vanoverberghii Ames; E. venosa (F. Mueller) H. G. Reichenbach ex Bentham var. papuana (Schlechter) Schlechter; E. versteegii J. J. Smith; Graphorkis bicallosa (D. Don) Kuntze; G. bicarinata (Lindley) Kuntze; G. candida (Lindley) Kuntze; G. fitzalanii (F. Mueller) Kuntze; Limodorum bicallosum (D. Don) Buchanan-Hamilton ex D. Don; Liparis bicallosa (D. Don) Schlechter.

Plants autotrophic, 50-75 cm tall. Pseudobulb subterranean, usually whitish, subglobose to cylindric, 5-10 cm, covered with a few sheaths. Leaf solitary, emerging after anthesis, linear, ca. 50 × 1.2 cm, gradually tapering at base into a petiole-like stalk, apex acute or acuminate; petiole-like stalk to ca. 35 cm. Inflorescence racemose, 50-75 cm, slender, with 3-5 scattered tubular sheaths; rachis to 10 cm, subdensely few to many flowered; floral bracts lanceolate, 8-14 mm, shorter than ovary, apex acuminate. Flowers medium-sized, ca. 25 mm in diam. Sepals pale green, with 5 purple veins. Petals pale green, tinged purplish red at apex, and lip pale purplish red, with dark purple venation; pedicel and ovary 10-15 mm. Dorsal sepal lanceolate, ca. 13 × 3 mm, apex acute; lateral sepals lanceolate, ca. 13 × 3-5 mm, adnate at base to column foot, apex acute. Petals lanceolate to narrowly elliptic, ca. 13 × 7-8 mm, base contracted, apex acute; lip subovate, ca. 15 mm, spurred at base, 3-lobed; lateral lobes erect, triangular, oblique; mid-lobe recurved, broadly ovate, clawed at base, apex retuse; disk with 3 purplish red ridges; spur saccate, ca. 4 mm, apex obtuse. Column ca. 6 mm, slender, with a distinct column foot ca. 3 mm. Fl. Jun.

Hainan [India, Indonesia, Malaysia, Myanmar, Nepal, New Guinea, Thailand; Australia].