卵叶火烧兰 luan ye huo shao lan

Amesia royleana (Lindley) Hu; Arthrochilium royleanum (Lindley) Szlachetko; Cephalanthera royleana (Lindley) Regel; Helleborine royleana (Lindley) Soó; Limodorum royleanum (Lindley) Kuntze.

Plants 30-80 cm tall. Rhizome elongate, 3-5 mm in diam. Stem glabrous toward base, usually puberulent or glabrescent above, with several sheaths toward base. Leaves 6-9, ovate-lanceolate to lanceolate, lowest one occasionally elliptic or ovate, 7-12 × 2.5-4 cm, glabrous, base amplexicaul, apex acuminate. Rachis 5-8(-10) cm, brown pubescent, laxly (2-)5-8-flowered; floral bracts 15-40(-70) × 5-10 mm, lower ones exceeding flowers. Flowers resupinate; sepals and petals pale green, lip purple or pink with purple or dark red venation; pedicel and ovary 13-16 mm, brown pubescent. Sepals ovate to elliptic-ovate, 15-18 × 5-7 mm, outer surface carinate, apex shortly acuminate; lateral sepals oblique, slightly wider than dorsal sepal. Petals ovate-elliptic, 13-16 × 6-8 mm, apex obtuse; lip 14-18 mm, without a mesochile; hypochile cymbiform, 7-10 × 14-18 mm, with erect, elliptic lateral lobes 5-7 mm wide; epichile narrowly ovate-elliptic, 9-10 × 4-5 mm, with a pair of fleshy, suborbicular calli on lateral veins toward margins and occasionally with minute protuberances centrally. Column 4-7 mm. Fl. Jul-Aug. 2n = 40, 60.

Moist soil along streams, wet prairies; 2900-3000 m. S and SE Xizang [Bhutan, N India, Kashmir, Kyrgyzstan, Nepal, Pakistan, Tajikistan, Uzbekistan].