生活型

herb

形態特徵

• Leafless and achlorophyllous terrestrial herbs. Plants 6-30 cm high. Rhizome subterranean, pale brown, fleshy, fusiform or moniliform, 1-5 cm long, 4-7 mm thick. Roots few, arising from apex of rhizome.
• Peduncle pale brown to whitish, 5-15cm long, 1.5-2 mm in diam., glabrous, with 3-5 scarious scales. Raceme 2-5 cm, 8-15 flowered; bract ovate, 1.5 mm long, acuminate; pedicel and ovary 4-6 mm long, glabrous. Flowers whitish, tinged with pale red, not opening widely; sepals and petals connate at base into floral tube; dorsal sepal 7-8 mm long, connate with petal for 1/2 to 2/3 their length, petals shorter, lateral sepals 5-7 mm long, connate for 2/3 to 4/5 their length, whole structure united with petals ca. 1/3 its length, free apex reflexed, 2-lobed, lobules semiorbicular. Lip white, obovate, 4-6 mm long, erect on both sides, 4-5 mm wide when flattened, base cuneate, apex obtuse, minute irregular denticulate in apical margin, disc with longitudinal raised keel of brownish warty papillae. Column white, clavate, ca. 5 mm long, apex enlarged, with 2 truncate rhombic wings, base expanded into inconspicuous short foot less than 1mm long; anther oval or orbicular, ca. 0.8 mm long, white; pollinia 4, 2 pairs, white, soft, ellipsoid, connected by broad viscidium detached from rostellum.
• Capsules cylindrical, 1.8-2.2 cm long, triagonal in cross section; pedicel lengthening 10-25 cm long in fruit, ca. 2 mm in diam., fleshy.

物候

Flowering observed from late March to May. Fruiting from April to June.

分布

• 台灣 : scattered on central and southern lowlands, and the southeast islet of Lanyu.
• 世界 : Samoa, Vanuatu, New Caledonia, Fiji, Tonga, Niue, Palau, West Java and Vietnam.

引證標本

Nantou County, Lugu Hsiang, Xidicheng, ca. 300 m in elevation, 2007 May 18, T. C. Hsu & S. W. Chung 801 (TAIF); Pintung County, Manjhou Hsiang, Jiutzuo, ca. 100m in elevation, 2007 May 26, T. C. Hsu & S. W. Chung 821 (TAIF); Taitung County, Lanyu Hsiang, Tianchi, mountain ridge, ca. 220 m in elevation, 2004 Apr 13, S. W. Chung 8327 (TAIF); Xiaotianchi, ca. 200 m in elevation, 2006 Apr 14, T. C. Hsu 469 (TAIF); same loc., 2007 May 25, T. C. Hsu 821 (TAIF); Lanyu Lighthouse, ca. 200 m in elevation, 2006 Apr 14, T. C. Hsu 470 (TAIF); same loc., 2005 Mar 19, C. L. Yeh & C. R. Yeh 4032, 4033 (PPI). From roadway to Tianchi, trailside, ca. 150 m in elevation, 2006 Apr 15, T. C. Hsu 474 (TAIF); same loc., 2005 Mar 19, C. L. Yeh & C. R. Yeh 4034, 4035 (PPI); Dongqingxi, ca. 300m in elevation, 2007 May 24, T. C. Hsu 815 (TAIF).

參考文獻

• Tien-Chuan Hsu and Shih-Wen Chung, Taiwania 52(4): 360. 2007.