Amitostigma wenshanense W. H. Chen, Y. M. Shui & K. Y. Lang, Acta Bot. Yunnan. 25: 521. 2003.

文山无柱兰 wen shan wu zhu lan

Plants ca. 20 cm tall. Tubers oblong, ca. 40 × 15 mm. Stem with 1 or 2 tubular sheaths at base, 2-leaved. Leaves basal, subopposite, erect to porrect, oblong-oblanceolate, 6-6.5 × 1-1.6 cm, apex acute. Peduncle ebracteate; rachis 1.5-2.5 cm, subdensely 6-9-flowered; floral bracts ovate-lanceolate, 1.5-2.5 mm, shorter than ovary, apex acute. Flowers not secund; ovary and pedicel ca. 8 mm. Dorsal sepal oblong-lanceolate, ca. 3 × 2 mm, 1-veined, apex obtuse; lateral sepals reflexed, obovate, oblique, ca. 4 × 2.5 mm, 1-veined, apex acute. Petals connivent with dorsal sepal and forming a hood, ovate, oblique, ca. 3 × 2 mm, 1-veined, apex acute; lip ovate, 4.5-5 × ca. 1.5 mm, 3-lobed above middle; disk with 2 short longitudinal lamellae; lateral lobes ovate; mid-lobe lanceolate, ca. 1.8 mm, apex obtuse; spur pendulous, slightly incurved, subglobose, ca. 1.3 mm, apex rounded. Fl. Aug.

● Damp places in forests; ca. 3000 m. Yunnan.