生活型

herb

形態特徵

• Perennial herbs; stems branched or rarely simple, erect, 20-70 cm tall, sparsely velutinous at first, soon glabrous; roots fibrous.
• Radical and lower leaves long petiole, tetraternate or tetrapinnate to pentaternate, leaflets 81-240, ovate or obovate, sometimes elliptic, chartaceous, 2-8.1 mm long, 1-7 mm broad, base cuneate, obtuse or truncate, sometimes oblique, entire, 3-lobed, dark green and glabrous above, glaucous and sparsely velutinous beneath along venation or glabrous; nerves elevated on both surfaces, margin thickened beneath; petiolulate; petiole base widely sheathing stipules membranaceous. Cauline and upper leaves biternate or triternate, segments sometimes larger than on lower parts.
• Inflorescence corymbose-paniculate, terminal or lateral. Flowers greenish, pedicel sparsely velutinous; sepals 4, elliptic, 2-3 mm long, 1.3-1.5 mm broad, apex acute or obtuse, dentate, 2 or 3-veined, almost glabrous, caducous; stamens 25-40, 1.8-2.5 mm long, anthers elliptsoid-linear, 0.5-0.8 mm long, filaments linear dilated above, whitish, connective retuse; carpels about 20, glabrous, 1.5-1.7 mm long, sessile. Style persistent, recurved-circinate.
• Achenes fusiform, glabrous, deeply striate, 2.5-2.8 mm long, sessile.

分布

• 台灣 : Forests and forest margins and open areas, in the central mountains, Hsuehshan and Yushan above 3,000 m altitudes.

引證標本

ILAN: Mt. Nanhutashan, Ohwi 4188 (Holotype, KYO!).

參考文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG. 1996. Flora of Taiwan, second edition 2: 567. (Fl. Taiwan 2nd edit.)