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

4. Hetaeria oblongifolia Blume, Bijdr. 410. 1825.

矩叶翻唇兰 ju ye fan chun lan

Epipactis discoidea (H. G. Reichenbach) A. A. Eaton; E. erimae (Schlechter) A. A. Eaton; Goodyera discoidea (H. G. Reichenbach) Schlechter; G. erimae Schlechter; Hetaeria discoidea (H. G. Reichenbach) Schlechter; H. erimae (Schlechter) Schlechter; H. forcipata H. G. Reichenbach; H. helferi J. D. Hooker; H. micrantha Blume; H. pauciseta J. J. Smith; H. raymundii Schlechter; H. rubicunda H. G. Reichenbach; H. samoensis Rolfe; H. similis Schlechter; H. tenuis (Lindley) Bentham; Rhamphidia discoidea H. G. Reichenbach; R. rubicunda (H. G. Reichenbach) H. G. Reichenbach (1868), not (Blume) F. Mueller (1869); R. tenuis Lindley.

Plants 30-50 cm tall. Stem fleshy, 4-6-leaved. Leaves cauline, oblong, oblique, 8-11 × 2.5-4.1 cm, 3-veined, base obliquely obtuse or rounded, apex acute; petiole-like base and sheath 2.8-3.3 cm. Inflorescence 24-26 cm, slender, pubescent; sterile bracts 4, pinkish brown, lanceolate, glabrous to sparsely pubescent; rachis subdensely 30-40-flowered, 8-10 cm, pubescent; floral bracts lanceolate, 7-9 mm, subequal in length to ovary, puberulent, margins ciliate below middle, apex acuminate. Flowers half opening; ovary and pedicel held close to rachis, olive-green, subcylindric, not twisted, 4.5-5.5 mm, densely pubescent. Sepals white, tinged light yellowish green at base, broadly ovate, outer surface densely pubescent, apex obtuse; dorsal sepal ca. 3.5 × 2.5 mm; lateral sepals oblique, ca. 4 × 2.2 mm. Petals incurved at apex, white, narrowly rhombic-obovate, falcate, ca. 4 × 1.3 mm, apex subacute; lip cream-colored, broadly ovate-cymbiform, ca. 4 mm, 2-partite, fleshy toward apex; hypochile saccate, ca. 3.5 mm, containing 8-10 papillous calli, distal margin involute; epichile ligulate, attenuate, ca. 0.5 mm, apex subacute. Column ca. 2.2 mm, stout; wings small, ovate; rostellum arms small, linear, ca. 0.5 mm. Fl. Mar-Apr.

Montane forests; ca. 200 m. S Taiwan (Lan Yu) [Indonesia, S Japan, Malaysia, Myanmar, New Guinea, Philippines, Thailand, Vietnam; Australia, SW Pacific islands].


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