纤细头蕊兰 xian xi tou rui lan

Plants holomycotrophic, 9-21 cm tall. Rhizome with several short scales toward apex. Stem slender, lacking green leaves. Basal sheaths 2 or 3, tubular, 8-15 mm, membranous. Inflorescence laxly 3- or 4-flowered; rachis 4-8 cm; floral bracts linear-lanceolate, basal ones 12-20 × 2-3 mm, apex acuminate. Flowers weakly spreading, suberect, ca. 1 cm; pedicel and ovary 10-18 mm. Sepals linear-lanceolate or oblong-lanceolate, ca. 10 × 2-3 mm, 1-veined, obtuse; lateral sepals slightly oblique. Petals lanceolate, ca. 8.5 × 2.5-3 mm, 1-veined, acuminate; lip suberect, ca. 9 × 7 mm, spurred at base, 2-partite; hypochile lobes erect and clasping column, obliquely triangular-lanceolate, ca. 2.5 mm, apex subacute; epichile broadly ovate, 5-6 × 5-7 mm, apex acute to acuminate, with 5 fleshy papillose lamellae extending from base almost to apex; spur located slightly above base of hypochile, protruding between bases of lateral sepals, conic, 1.5-3 mm, apex obtuse. Column ca. 6 mm. Fl. May.

● NW Yunnan.