生活型

herb

形態特徵

• Herb; stem prostrate to ascending, reddish, glabrous to sparsely pilose on the upper side; stipules laciniate and sparsely pilose abaxially, the upper free, linear-lanceolate, 0.6–1.3 mm long, the lower fused, triangular or bifid at apex.
• Leaves ovate- to obovate-oblong, 2–7 mm long, 1–3.5 mm wide, obtuse to rounded at apex, obliquely obtuse to rounded at base, serrulate at the lower margin and/or apex, glabrous and with several scattered small purple spots above, sparsely pilose below; petioles reddish, 0.5-0.8 mm long, pilose.
• Cyathia solitary at nodes; involucres campanulate, to 1 mm long, pilose outside, pilose inside; stalks 0.3-0.8 mm long; glands 4, red, rounded to transversely elliptic or oblong, slightly concave, 0.1-0.3 mm long; appendages white to reddish, depressed obovate, entire to undulate, to 0.5 mm long, 0.3 mm wide; bracteoles acicular to linear. Male flowers 5–15, anthers red. Female flower with sparsely pilose pedicel; ovary pilose; style and stigma to 0.5 mm long
• Capsules 1.4–1.8 mm long, 1.5–1.8 mm diam., exserted, slightly nutant, sparsely pilose, the pedicels 0.8–1.3 mm long; seeds reddish, tetragonal, oblong-ovoid and transversely rugose, ca. 1 mm long, 0.7 mm diam.

分布

• 台灣 : Endemic, on sandy beaches and riversides of the western region.

引證標本

TAOYUAN: Yungan Port, Peng 12768. HSINCHU: Hsinchu City, Kangnanli, Lin et al. 444 (Holotype, HAST!); Nanliao, Mori 1739. CHANGHUA: Shenkang, Chaw & Lin 1188. TAINAN: Anping, Tanaka 10385. PENGHU: Fengkuei, Hsu & Kuo 14018.

參考文獻

• HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 436. .  (Fl. Taiwan 2nd edit.)