单花美冠兰 dan hua mei guan lan

Plants autotrophic, 15-22 cm tall. Pseudobulb subterranean, subglobose, 1.5-2 cm in diam., often borne in clusters. Leaves 2, present at anthesis, linear, plicate, ca. 18 × 0.4-0.5 mm, apex acuminate; petiole-like stalk enclosed in basal sheaths. Inflorescence 15-22 cm, slender, with 2 or 3 lanceolate membranous sheaths 1.2-2 cm; rachis 1-flowered; floral bracts 8-12 mm. Flower fragrant, olive-green with brown stripes, medium-sized. Sepals similar, narrowly oblanceolate, ca. 30 × 5 mm, apex obtuse. Petals oblong, ca. 20 × 6 mm, apex obtuse; lip ca. 23 × 10 mm, spurred at base, 3-lobed; lateral lobes small and narrow; mid-lobe obscurely 3-lobed, margin undulate; disk with 7 longitudinal ridges; spur ca. 5 mm. Column ca. 9 mm, without a column foot. Fl. Aug.

● Open places in Pinus forests, dry crevices; ca. 2800 m. NW Yunnan.