生活型

herb

形態特徵

• Perennial herbs; stems terete, rather stout, erect, ca. 5 mm thick, 0.6–1.3 m tall, glabrous in upper part, more or less covered with white hairs at base.
• Radical leaves pinnatifid; petioles short or up to 9 cm long; cauline leaves opposite, distant, clasping at base, pinnately divided, terminal lobe large, elliptic, lateral lobes very small, glabrous or sparingly puberulent on both surfaces, dentate, ciliate.
• Inflorescence a many-flowered compound corymb; peduncles long, with minute white hairs; bracts narrowly lanceolate, 2–6 mm long, margins with short hairs at base; bracteoles scale-like, opposite, ca. 1 mm long; calyx absent; corolla yellow, 2.5–3 mm long, with long loose hairs inside, regularly 5-lobed, segments spreading; stamens 4, 3.4–5 mm long, 2 stamens sparsely covered with white hairs near base; style linear, 2.5 mm long, stigma depressed.
• Achenes with a small wing, oblong, 3–4 mm long, more or less flat.

分布

• 台灣 : in broad-leaved forests at medium to high altitudes.
• 世界 : Sakhalin, Manchuria, eastern Siberia, Korea, Japan and the Ryukyus.

引證標本

HSINCHU: Litungshan, Sasaki s. n. Aug. 1913. TAICHUNG: Sunglin, Sasaki s. n. July 27, 1922; Paikouta-shan, Mori s. n. Sep. 1, 1903. NANTOU: Nengkaoshan, Huang, Hsieh & Kao 5701*, Kao 5736.

參考文獻

• KAO, Muh-Tsung & DEVOL, Charles E., Flora of Taiwan, second edition 4: 762. 1998.  (Fl. Taiwan 2nd edit.)