生活型

herb

形態特徵

• Roots few, slender, mostly extending from apex of rhizome. Rhizome tuberous, conical or ellipsoid, 2-6 cm long, 4-8 mm in diameter, yellowish brown, covered with numerous scales and root-hair-like unicellular hairs.
• Scales lanceolate, pale yellowish brown, 2-4 mm long. Inflorescence erect, dark brown, 1-4 cm long, 1.5-2 mm in diameter, basally 3-4 noded, with tubular, membranous sheaths. Bracts ovate, up to 3.5 mm long, 3 mm wide. Pedicel and ovary 6-10 mm long. Flowers 1-3(-5), bell-shaped, slightly nodding, resupinate, ca. 7-9 mm in diameter. Sepals and petals united and forming a 5-lobed perianth tube. Sepals subsimilar, fleshy, 9-13 mm long, connate ca. 2/3 their length with petals, lateral ones connate ca. 3/5 their length with each other, outer surface dark reddish brown, verruculose, margins entire; free portion of dorsal sepal straight, ovate-triangular, retuse, ca. 5 mm long, 4 mm wide; free portions of lateral sepals spreading, obtuse at apex. Free portions of petals ovate or ellipse, ca. 3 mm long, 1.5 mm wide. Lip adnate to column foot, 6-7 mm long, hypochile with 2 reddish, globose, nectared calli; epichile red-brownish, ovate-triangular, base contracted, with 4 indistinct ridges elevated on upper portion, and 2 ridges extending to the ligulate apex. Column straight, terete, 6-7 mm long, ca. 2 mm wide, white tinged with reddish brown at base; column foot well developed; lateral wings (stelidia) narrow, reddish, the edges parallel to column, base slightly angled, apex acute; rostellum small; stigma located at base. Anther hemispheric, ca. 1 mm in diameter, pollinia 2.
• Capsule cylindrical, ca. 3 cm long, pedicel elongating to 37 cm long in fruit. Seeds fusiform, 1.2-2.0 mm long.

物候

Flowering is mainly observed in February and fruiting from May to April.

分布

• 台灣 : Populations locate under broad leaved forests, bamboo forests or secondary forests at low altitude mountainous regions.

引證標本

Type: TAIWAN. Taipei County, Wulai Township, Wulai village, under Phyllostachys makinoi Hayata plantation, ca. 400 m alt., 15 Feb 2007, T.C. Hsu 715 (holotype TAI, isotype TAIF), here designated. Additional specimens examined (paratypes): TAIWAN. Taipei County: Chungho City, Hongludi, ca. 100 m alt., T.C. Hsu 1250 (TAIF); Wulai Township, Wulai village, ca. 400 m alt., T.C. Hsu 465, 768 (TAIF); Wulai Township, Pataoerhshan, ca. 600 m alt., T.C. Hsu 1221 (TAIF); Wulai Township, Chongzhi, 400-500 m alt., T.C. Hsu 716, 781 (TAIF); Wulai Township, Dadaoshan, ca. 500 m alt., T.C. Hsu 466, 467, 759, 1316 (TAIF); Wulai Township, Dabaokeshan, 500-600 m alt., T.C. Hsu 763 (TAIF); Wulai Township, Neidon Forest Recreation Area, ca. 600 m alt., T.C. Hsu 1252 (TAIF). Ilan County: Jiaosi Township, Wufongchi, ca. 200 m alt., T.C. Hsu 427, 717, 1247, 1291 (TAIF).

參考文獻

• Tian-Chuan Hsu and Chen-Meng Kuo, Taiwania 55(3): 244. 2010.