筒穗无耳沼兰 tong sui wu er zhao lan

Malaxis cylindrostachya (Lindley) Kuntze; Microstylis cylindrostachya (Lindley) H. G. Reichenbach.

Plants terrestrial, 20-35 cm tall. Pseudobulbs conic, ca. 1 × 1 cm. Stem arising from base of pseudobulb, sheathed, 3-10 cm; sheaths 2 or 3, clasping, 2-3 cm. Leaf 1, long petiolate; petiole tubular, sheathing stem, 2-5 cm; blade elliptic or orbicular to subspatulate, 4-9 × 3-4.5 cm, finely reticulately veined, apex obtuse. Inflorescence racemose, cylindric, densely many flowered; peduncle ridged, 5-10 cm; rachis ridged, (2.5-)5-14 cm; floral bracts lanceolate, 2-2.5 mm, apex acute. Flowers ca. 2 mm, uniformly yellowish green; pedicel and ovary linear, not twisted, 1.5-2 mm. Sepals subsimilar, ovate, 2-3 × 0.4-0.5 mm, apex acuminate. Petals linear-lanceolate, 1-1.9 × 0.4-0.5 mm, apex acute; lip fleshy, broadly ovate, 1.5-2 × 1-2 mm, margin thickened, with a raised central ridge, base weakly saccate, margin denticulate, apex apiculate to mucronate. Column stout, ca. 0.25 mm tall.

Terrestrial. Xizang [Bhutan, India, Nepal].