滇南翻唇兰 dian nan fan chun lan

Goodyera affinis Griffith, Not. Pl. Asiat. 3: 391. 1851; Cerochilus rubens Lindley; Hetaeria rubens (Lindley) Bentham ex J. D. Hooker; Rhamphidia rubens (Lindley) Lindley.

Plants 25-45 cm tall. Stem somewhat robust, with 6-8 well-spaced leaves. Leaves ovate or elliptic, slightly oblique, 7.5-13 × 3.5-5.5 cm, 5-veined, base obtuse, apex acute; petiole-like base and sheath 2.5-5 cm. Inflorescence 16-28 cm, slender, pubescent; sterile bracts 3-5, lanceolate, abaxially weakly pubescent; rachis densely many flowered, 7-14 cm, densely glandular pubescent; floral bracts lanceolate, 7-8 × ca. 3 mm, nearly as long as ovary, puberulent, apex acuminate. Flowers opening slightly, small; ovary and pedicel subcylindric, not twisted, 8-9 mm, densely glandular pubescent. Sepals green, adaxial apex tinged with pink, outer surface densely glandular pubescent; dorsal sepal broadly ovate, cymbiform, ca. 5 × 3.5 mm, 3-veined, apex obtuse to acute; lateral sepals broadly ovate, concave, slightly oblique, ca. 4.2 × 3.2 mm, 1-veined, apex obtuse. Petals white, obliquely spatulate, ca. 4.5 × 1.6 mm, 1-veined, apex slightly mucronate; lip lageniform-ovate, ca. 3.5 mm, 2-partite; hypochile dilated, concave, ca. 3 × 3.8 mm, 1-veined, containing a solitary, warty, 2-4-lobed callus on either side of midvein, distal margin slightly involute; epichile dilated, broadly ovate, ca. 0.5 × 0.8 mm, apex obtuse. Column ca. 2 mm; wings small, narrow; rostellum arms to 0.8 mm. Fl. Mar-Apr. 2n = 22, 24, 42.

Dense forests; 800-1000 m. S and SE Yunnan [Bhutan, NE India, N Myanmar, Thailand, Vietnam].