耿马齿唇兰 geng ma chi chun lan

Anoectochilus gengmanensis K. Y. Lang, Acta Phytotax. Sin. 34: 554. 1996.

Plants 18-22 cm tall, somewhat stout. Rhizome elongate. Stem ascending, stout, ca. 5 mm in diam., 5- or 6-leaved. Leaves cauline, not withering at anthesis, abaxially green, adaxially dark green, with white line along midvein and lateral veins, ovate to elliptic, 3-5.5 × 2-3 cm, base obliquely cuneate to obtuse, apex acute; petiole-like base 1.5-3 cm including tubular sheath. Inflorescence 8-12 cm, with 2 or 3 sterile bracts, pilose; rachis 5-6 cm, subdensely several to many flowered; floral bracts lanceolate to ovate-lanceolate, slightly shorter than ovary, abaxially puberulent, apex acuminate. Flowers resupinate, pink, small; ovary and pedicel cylindric-fusiform, 10-12 mm, pubescent. Sepals pubescent; dorsal sepal ovate, concave, ca. 4 × 3 mm, 1-veined; lateral sepals widely spreading, ovate-elliptic, ca. 5.5 × 4 mm, 1-veined. Petals obliquely obovate, ca. 4.5 × 2.2 mm, 1-veined, apex obtuse; lip Y-shaped, ca. 6 mm, 3-partite; hypochile concave-saccate, containing 2 short, rounded calli; mesochile narrow, ca. 0.8 mm; epichile dilated, 2-lobed; lobes diverging at acute angle, quadrate, 2.5-3 × ca. 2 mm. Column ca. 2.8 mm; wings transversely oblong; anther triangular-ovoid, ca. 1.8 mm; rostellum arms ca. 0.5 mm. Fl. May.

● Shaded rocky slopes in forests; ca. 2500 m. SW Yunnan.