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FOC | Family List | FOC Vol. 25 | Orchidaceae | Bulbophyllum

35. Bulbophyllum bittnerianum Schlechter, Orchis. 4: 108. 1910.

团花石豆兰 tuan hua shi dou lan

Rhizome stout, 4-5 mm in diam., rooting from nodes of rhizome. Pseudobulbs 3-5 cm apart from each other, ovoid, ca. 2.5 cm, 1.3-2.3 cm in diam., 4-ribbed, with a terminal leaf. Petiole 1-1.5 cm; leaf blade oblong, 15-17.5 × 2-3.5 cm, slightly fleshy, base contracted into petiole, apex subobtuse. Scape from base of pseudobulb, suberect or arching; raceme 3-4 cm, densely many flowered; peduncle stout, with 3 or 4 large sheaths; floral bracts yellowish white, oblong, large, ca. 20 × 7-8 mm, papery, margins with purple spots. Pedicel and ovary yellowish white, ca. 3 mm; flowers enclosed in floral bracts, fleshy; sepals and petals yellowish white spotted with purple; lip yellowish with purple apex. Dorsal sepal oblong, concave, ca. 6.5 × 3.5 mm, entire, obtuse; lateral sepals obliquely ovate, ca. 8 × 4.5 mm, base adnate to column foot, their lower edges connate to each other, apex acute. Petals narrowly ovate, ca. 3 × 1.8 mm, entire, acute; lip ligulate, ca. 3.5 × 1 mm, narrowed toward obtuse apex, adaxial base grooved, with 2 auricles on both basal sides, both surfaces densely papillate. Column ca. 3 mm; foot ca. 2 mm; stelidia deltoid, ca. 1 mm; anther cap yellow, apex beaked. Fl. Jul.

Tree trunks in evergreen broad-leaved forests; ca. 1700 m. S Yunnan [N Thailand].


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