生活型

herb

形態特徵

• Annual rhizomatous pubescent herbs, spreading or upright, sometimes creeping, 15-40 cm tall. Roots fibrous.
• Leaves monomorphic, ternate or simple, terminal ones 3-parted, 1.5-5.5 cm long, 2.3.-5.1 cm wide; ovate or widely elliptic, unlobed or 3-lobed; apex acute; base obtuse; margin coarsely serrate; sparsely pubescent on adaxial surface, pubescent on abaxial surface; petioles 6.4-12.5 cm long.
• Inflorescence a cyme; pedicels 1.1-9.4 cm long, pubescent. Flowers 8-15 mm in diam., yellow; sepals 5, spreading, broadly elliptic or elliptic, pubescent outside, glabrous inside; petals 5, 4-5 mm long, bovate or elliptic, glabrous on both sides; stamens numerous, 2.5-3.5 mm long, anthers oblong, 1-1.5 mm long, filaments linear; carpels many, glabrous; receptacle glabrous.
• Fruiting head globose; achenes 3-5 mm long, obovoid-orbicular, glabrous, laterally compressed; styles persistent, short, recurved.

物候

Flowering September to April; fruiting late September to August.

分布

• 台灣 : semi-wet places and forest margins between 1,000 and 3,000 m in the central and northern parts of the island.
• 世界 : Southern mainland China, Ryukyus and Japan.

引證標本

TAOYUAN: Palin to Tamanshan, Hu & Yang 741. TAICHUNG: Anmashan, Huang 8109. NANTOU: Hsitou, Chen 10104, Yang 1638. CHIAYI: Alishan, Chen 4022, Hsu & Hsu 3911.

引用文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 560. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)