生活型

herb

形態特徵

• Erect, tufted herbs, ca. 2 m tall, drooping toward apex of pseudostem.
• Leaves sessile, glabrous, coreaceous, oblong, longest blade 50-55 by 11-13 cm, apex sharply long caudate with a flagellate tip, twisting, 5-8 cm long, base attenuate, ligules auriculate, reddish brown, glabrous, coriaceous, entire, rounded, 5 mm long, ca. 3 uppermost sheaths inflated, to 3 cm wide when opened, with small leaf of vestige.
• Inflorescences terminal, racemose, sometimes pendulous, flower bearing part 7-25 cm long; peduncle green, often enclosed by sheaths, to 3 cm long when emergent; bracts spathaceous, translucent, white, with a brownish tip, 27 by 12 mm when flattened; bracteoles absent. Flowers white, persistent, turning brown after anthesis; pedicels ca. 9 mm long; calyx 3-dentate, 12 by 11 mm when dissected; corolla tube 7 mm long; petals oblong, 22 by 6 mm, slightly cucullate at apex; labellum connate to lateral petals to middle of labellum, free part split into two subulate lobes, 12 by 2.5 mm, apex of lobes slightly bifid; filament 20 mm long, channeled inside, enclosing style to half length of filament, spirally coiled after anthesis; anther 6 by 2.5 mm; staminodes linear, 10 mm long; nectaries absent; ovary 5 mm long, 3 mm in diam.
• Fruits subglobose, 15 by 12 mm, glabrous, with faint longitudinal costae, dehiscing into three divisions. Seeds black, irregular in shape, ca. 2 mm.

分布

• 台灣 : Endemic to Lanyu Is.

引證標本

TAITUNG: Lanyu Is.: Yeyou Vill.-Mt. Hontou, 350m alt., 30 Sep 1998, Funakoshi & Chen 1936 (holotype, TI; isotype, AAU, K, TAIF, US); Kotosho (=Lanyu Is.), 19 Jul 1912, S. Sasaki s. n.; same loc., 20 Sep 1933, S. Sasaki, s. n.; same loc., Moo 2339; same loc., Huang 6200; same loc., Huang & Kao 5205, 6268 ; Wangnanchiau-Tengchi, alt. 20-350m, Tateishi et al. 15306; Kao 4851.

引用文獻

• WANG, Jenn-Che, Flora of Taiwan, second edition 5: 719. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)