滇越金线兰（新拟）
Anoectochilus chapaensis Gagnep. in Bull. Mus. Paris 2, ser. 3, 7: 679. 1931 et Fl. Gen. L' Indo-Chine 6: 572, fig. 54(3-7). 1933; Seidenf., Cont. Rev. Orch. Fl. Camb. Laos and Vietn. 7. 1975, et in Opera Bot. 114: 33. 1992.
Shaded humid places in dense forests; 1300-1400 m. SE Yunnan [N Vietnam]. |
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Plants 12-18 cm tall. Stem ascending or erect, 2.5-3 mm in diam., 4- or 5-leaved. | ||
Leaves abaxially pale green, adaxially blackish green with golden-red venation, ovate, oblique, 2-5 × 1.5-3.5 cm, apex acute; petiole-like base and tubular sheath 0.8-1.6 cm. |
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Peduncle 8-11 cm, with 2 or 3 pale red sheathing sterile bracts; rachis 2-5 cm, 2-7-flowered; floral bracts pale red, ovate-lanceolate, 6-10 mm, shorter than ovary, outer surface pubescent, apex acuminate. Flowers erect, not resupinate, white; ovary and pedicel narrowly cylindric, not twisted, 10-13 mm, pubescent. Sepals pubescent on outer surface, 1-veined; dorsal sepal ovate, cymbiform, ca. 6 × 3.5 mm, apex acuminate; lateral sepals ovate-oblong, ca. 6 × 3 mm, apex obtuse. Petals ovate, strongly oblique, falcate, ca. 6 × 3 mm, 1-veined, apex caudate and incurved; lip white, Y-shaped, 10-12 mm; hypochile short; mesochile 5-6 × ca. 3 mm; flanges oblong, pectinate, divided into 3 or 4 narrow teeth; epichile longitudinally dilated, 2-lobed; lobes diverging widely, obovate, 8-9 × 6-7 mm, margin crenulate, apex truncate; spur conic, 4-5 mm, apex obtuse, containing 2 calli. Column short, with 2 broad lamellate wings. Fl. Jul-Aug. |
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