生活型

shrub

形態特徵

• Densely branched erect shrubs; stems bamboo-like, to 0.6 m tall, 3 mm thick; branches straight, slender, smooth, subterete, ca. 15-20 cm long, 1 mm thick; internodes 2-2.5 cm long.
• Leaf blade ovate to broadly ovate or nearly orbicular, base cuneate to truncate or shallowly cordate, apex contracted, subobtuse or subacute, 1.5-2.5(-3.5) cm long, 1.2-2(-3) cm wide, membranaceous, lower surface glaucous; costas 3 (or 5, but then marginal pair not reaching leaf apex), separate to base, distinct, lateral veinlets weak on upper surface, slender but distinct on lower surface, forming fine reticulations; petiole 1-1.5 cm long, slender, grooved adaxially, winged to 2/3 from base; wings thin, ca. 0.5 mm wide, confluent with petiole at apex; tendrils none.
• Umbel solitary in 1 or 2 basal nodes of flowering branches, both sexes 1-4-flowered, pendent; peduncle capillary, 7-20 mm long: rays ca. 5 mm long. Starmnate perianth globose in bud; tepals 2 mm long, ovate-deltoid, yellow green or tinged reddish brown, spreading. Anthers 0.4 mm long, subsessile.
• Berries 1 to 3 per umbel, 5 mm in diam., blue; seeds usually 1.

物候

flowering in summer.

分布

• 台灣 : occasional, forests and grassy hillsides above 3,000 m.
• 世界 : Afghanistan through the Himalaya eastward to Taiwan, central mainland China and Japan.

引證標本

HSINCHU: Tapachienshan Chang 2037. MIAOLI: Itseshan, Sasaki s. n. B496. TAICHUNG: Lishan, Hsu 830. NANTOU: Kuankao, Peng 8140. Chilaishan, Shen & Liu 54; Nanhutashan, Wang & Tung 1381; Nengkao, Kudo & Mori (30039). KAOHSIUNG: Kuanshan, Wang 1100. PINGTUNG: Tawushan, Huang et al. 13677. HUALIEN: Chingshuishan Liao & Ho 1517; Tayuhlin, Hsu & Kuo 7159.

參考文獻

• KOYAMA, Tetsuo, WANG, Kuang-Yuh, LU, Fu-Yuan, and OU, Chern-Hsiung, Flora of Taiwan, second edition 5: 129. 2000.  (Fl. Taiwan 2nd edit.)