Crepidium matsudae (Yamamoto) Szlachetko Fragm. Florist. Geobot., suppl. 3: 129. 1995.

鞍唇沼兰 an chun zhao lan

Microstylis matsudae Yamamoto, Icon. Pl. Formosan., Suppl. 2: 4. 1926; Malaxis matsudae (Yamamoto) Hatusima ex K. Nakajima.

Plants terrestrial. Stem purplish green, cylindric, 7-12 cm, fleshy, with several nodes, ± enclosed in sheaths. Leaves 4 or 5; petiole ca. 2 cm; blade abaxially purplish, obliquely ovate-elliptic or ovate-oblong, 4-10 × 2-3.5 cm. Peduncle 9-12 cm, slender; rachis 5-8 mm, 10- or more flowered; floral bracts reflexed, green, ovate-lanceolate, ca. 3 mm. Flowers green or tinged with purple; pedicel and ovary ca. 5 mm, with 6 raised ridges. Dorsal sepal ovate-elliptic, 2.5-3 × 1.5-1.8 mm, margin revolute, apex subacute; lateral sepals broadly ovate or elliptic, slightly wider than dorsal sepal. Petals linear, ca. 2.5 × 0.5 mm; lip superior, subovate in outline, ca. 4.5 mm, narrowed near middle and shoulderlike, shallowly 2-lobed, sinus ca. 0.5 mm; auricles falcate, ca. 0.5 mm. Column short, ca. 1 mm. Fl. Jun-Jul.

Forests, bamboo forests; 1000-1500 m. S Taiwan [Japan (Ryukyu Islands)].