生活型

herb

形態特徵

• Plants 30-50 cm tall. Pseudobulbs tufted, globose-ovoid, 1.5 cm long, with 2 or 3 nodes.
• Leaves 2 or 3, lanceolate, 30-40 cm long, 4-7 cm wide, apex acuminate, base cuneate, gradually narrowed into petiole; petiole 5-15 cm long.
• Scapes 40-50 cm long, green or tinged with purple, rachis 5-10 cm long; bracts lanceolate, 1-2 cm long; pedicel and ovary 3-4 cm long, ovary nearly glabrous, with 6 sharp raised ridges. Flowers 5-10, loosely spaced, white or tinged with light purple, widely opening; dorsal sepal lanceolate-ovate, 20-25 mm long, 9-11 mm wide, acuminate at apex, slightly contracted at base; lateral sepals similar but +/- longer and oblique, 25-27 mm long, 10 mm wide, acute at apex, strongly contracted at base; petals linear lanceolate, 18-20 mm long, 4 mm wide; lip adnate to column at base, spurred, orbicular, 13-15 mm long, 18-20 mm wide, 3-lobed, central lobe orbicular, 9 mm across, aristate at apex, undulate-crisped, lateral lobes falcate, ovate, entire or slightly undulate, disc often with 3 low ridges near base, spur 1-1.5 cm long, slender, slightly incurved; column 7-9 mm long, connate ventrally with base of lip; anther white, elongate, cordate, 4 mm long; pollinia yellowish white, in 2 groups of 4 (2 long and 2 short), attached to a oblong viscidium; stigma a solitary large cavity; rostellum short, bifid.
• Capsules to 5 cm long, with sharp wing-like ridges.
• In this species, the size of the flowers is variable, and the shape, lobes and margin of the lip are highly variable. It is remarkable for its ovary and fruit with sharp wing-like ridges.

分布

• 台灣 : Common in forests from 1,000 to 2,000 m throughout the island.

引證標本

TAIPEI: Chingpingshan, Su 560. TAOYUEN: Litungshan, Su 8226. ILAN: Nanshan to Chiliting, Ou & Liao 3812. HSINCHU: Wutzeshan, Su et al. 8830. MIAOLI: Manapanshan, Su & Chen 8861. TAICHUNG: Anmashan, Liu et al. s. n. Oct 1957; Pahsienshan, Su & Chen 8166. NANTOU: Fonghuang, Hayata s. n. 1916; Su 6952. CHIAYI: Alishan, Kawakami & Mori s. n. 1908; Ou & Lu 3628. KAOHSIUNG: Donna, Su & Chen 7522. PINGTUNG: Kueihu, Chen et al. s. n. Jan. 1975; North Tawu, Su 9364. TAITUNG: Doushan, Su & Chen 8887; Hsingkangshan, Su & Chen 7699. HUALIEN: Chinshuishan, Su & Hsu 8176; Wangzong, Kao 473.

引用文獻

• SU, Horng-Jye, Flora of Taiwan, second edition 5: 782. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)