20. Amitostigma bifoliatum Tang & F. T. Wang, Bull. Fan Mem. Inst. Biol. Bot. 7: 127. 1936.
棒距无柱兰 bang ju wu zhu lan
Plants 6.5-17 cm tall. Tubers ovoid to ellipsoid, ca. 10 × 5-6 mm. Stem with 2 tubular sheaths at base, 2-leaved. Leaves basal, subopposite, erect to porrect, broadly ovate to ovate-lanceolate, 1.5-3 × 0.4-0.8 cm, apex acute to acuminate. Peduncle ebracteate; rachis 2-5 cm, subdensely several to more than 10-flowered; floral bracts lanceolate, shorter than ovary, apex acuminate. Flowers mostly secund, pale purple; ovary and pedicel ca. 8 mm. Dorsal sepal elliptic-ovate, concave, ca. 4 × 2 mm, 1-veined, apex acute; lateral sepals reflexed, ovate-lanceolate, slightly oblique, ca. 4 × 2 mm, 1-veined, apex acute. Petals connivent with dorsal sepal and forming a hood, ovate, oblique, ca. 3.5 × 1.5 mm, 1-veined, apex acute; lip rhombic, ca. 6 × 5-7 mm, 3-lobed below middle; disk finely papillate; lateral lobes linear; mid-lobe cuneate-oblong, ca. 3 mm, apex slightly dilated and irregularly serrulate; spur pendulous, slightly incurved, cylindric-clavate, ca. 3 mm, neck contracted, apex obtuse; viscidia elliptic; stigma lobes clavate. Fl. Aug-Sep.
● Damp places, shrubby slopes, grasslands; 700-1200 m. S Gansu, N Sichuan.