二耳沼兰（植物分类学报）
Malaxis biaurita (Lindl.) Kuntze, Rev. Gen. Pl. 2: 673. 1891; Seidenf. in Dansk Bot. Ark. 33 (1): 67. fig. 46. 1978, et in Opera Bot. 114: 147. 1992; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 294. 1995. ——Microstylis biaurita Lindl., Gen. Sp. Orch. Pl. 20. 1830. ——Microstylis sutepensis Rolfe ex Downie in Kew Bull. 359. 1925. ——Microstylis brevicaulis Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 62, 191. 1919. ——Malaxis sutepensis (Rolfe) Seidenf. et Smitin., Orch. Thail. 2 (1): 148. 1959, pro part. ——Malaxis brevicaulis (Schltr.) S. Y. Hu in Quart. J. Taiwan Mus. 27 (3, 4): 433. 1974.
Forests; 1300-2500 m. S and W Yunnan [NE India, Laos, Myanmar, Thailand].Type specimens from northeast India. |
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Plants terrestrial. Stem cylindric, 2-2.5 cm, fleshy, with several nodes, ± enclosed in membranous sheaths. |
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Leaves usually 3, ovate, oblong-ovate, or subelliptic, 5-10 × 1.8-5 mm, base contracted into a sheathlike, amplexicaul petiole 1.5-3.5 cm, apex acuminate. |
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Inflorescence erect; peduncle 15-21 cm, wingless; rachis 7-9 cm, 20-30-flowered; floral bracts reflexed, narrowly lanceolate, 4.5-6 mm. Flowers purplish red to green, ca. 7 mm in diam.; pedicel and ovary 4-5 mm. Dorsal sepal suboblong or oblong-lanceolate, 6-6.5 × 1.5-2 mm, margin revolute, apex obtuse; lateral sepals narrowly oblong-ovate, ca. 5 × 1.5-2 mm, base oblique, apex obtuse. Petals narrowly linear, ca. 5.5 × 0.3 mm; lip superior, rhombic-elliptic in outline, 4-5.5 × ca. 3 mm, base with a pair of auricles decurrent backward embracing column apex, unlobed, central part with 2 short lamellae, and between lamellae a longitudinal groove; auricles ovate or narrowly ovate, 2-3 mm. Fl. Jun. |
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