生活型

herb

形態特徵

• Roots few, slender, mostly extending from apex of rhizome. Rhizome tuberous, fusiform or cylindrical, 2-5 cm long, 4-11 mm in diameter, yellowish brown, covered with numerous scales and root-hair-like unicellular hairs.
• Scales lanceolate, pale yellowish brown, 1-3 mm long. Inflorescence erect, 3-6 cm long, 2-4 mm in diameter, pale brown under ground and dark brown over ground, 3-5 noded, with tubular, membranous sheaths; rachis often less than 2 cm long. Bracts broad ovate to ovate, brownish, 4-8 mm long, 3-5 mm wide. Pedicel and ovary 10-15 mm long. Flowers 1-3(-4), bell-shaped, slightly nodding, resupinate, ca. 18-23 mm long, 11-13 mm in diameter. Sepals and petals united and forming a 5-lobed perianth tube. Sepals subsimilar, fleshy, 19-24 mm long, connate ca. 3/4 their lengths with petals, lateral ones connate ca. 2/3 with each other, outer surface pale brownish, indistinctly verruculose, margins entire; free portion of dorsal sepal ovate-rectangular, apex retuse, 6-7 mm long, 6-7 mm wide; free portions of lateral sepals ovate, 6-7 mm long, 7-8 mm wide, apex obtuse. Free portions of petals pale brown, ovate, ca. 4 mm long, 2.5 mm wide, base contracted and thickened, margin entire or slightly scabrous. Lip adnate to column foot, greenish white tinged brown at apex, 6-7 mm long, 4-5 mm wide; hypochile with 2 greenish, globose calli; epichile rhombate-ovate, contracted at base, margin slightly scabrous or undulate, thickened and distinctly 6 ridged on the disc, the central two ridges extending toward the ligulate apex. Column 3-lobed, lateral lobes erect, 6-7 mm long, central lobe strongly incurved; column foot well developed; rostellum abscent. Anther hemispheric, ca. 1mm in diameter, pollinia 2, viscidium minute.
• Capsule cylindrical, 2-3.5 cm long, pedicel elongating to 20-40 cm long in fruit. Seeds fusiform, 1.5-2 mm long.

物候

Flowering is observed from late March to early April and fruiting from April to early May.

分布

• 台灣 : Its population is so far found under secondary forests and bamboo forests of Yangmingshan area, Taipei City.

引證標本

Taipei City: Beitou District, Chongchengshan, T.C. Hsu 777, 1292, 1304 (TAIF). Type: TAIWAN. Taipei City: Beitou District, Chongchengshan, 700-800 m alt., 24 Mar 2008, T.C. Hsu 1300 (holotype TAI, isotype TAIF), here designated.

參考文獻

• Tian-Chuan Hsu and Chen-Meng Kuo, Taiwania 55(3): 243. 2010.