生活型

herb

形態特徵

• Perennial herbs; stem branched or rarely simple, sulcate, erect, 50-150 cm tall, glabrous; roots fibrous.
• Radical leaves wilted at anthesis; cauline leaves triternate to tetraternate, leaflets 27-45, ovate, obovate or deltoid, chartaceous, 7-34 mm long, 5-38 mm wide, base truncate, cuneate or obtuse, entire, deeply 3-lobed, middle segment 3-lobed, lateral segments usually 2-lobed, dark green above, glabrous beneath; nerves elevated only beneath, margin not thickened; petiole base widely sheathing, stipules membranaceous.
• Inflorescence cymose paniculate, terminal or lateral. Flowers yellowish-green: pedicel glabrous; sepals 4, elliptic, 2-2.7 mm long, 1-1.4 mm wide, retuse, dentate, caducous main veins 3; stamens numerous, 4.5-5.5 mm long, anthers linear, 0.9-1.3 mm long, filaments linear, dilated above, whitish, connectives mucronulate; carpels 8-10-(15), glabrous, 2-2.7 mm, sessile, style long, persistent, recurved-circinate.
• Achenes fusiform, glabrous, shallowly stirate, 4.5-5.8 mm long, sessile.

分布

• 台灣 : Beside streams, wet places and forests in the central mountains, Hsuehshan, Yushan and Alishan above 2,500 m.

引證標本

CHIAYI: Mt. Yushan, Mori s. n. 1909 (Holotype, TI!)

參考文獻

• YANG, T. Y. ALECK and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 570. 1996.  (Fl. Taiwan 2nd edit.)