生活型

herb

形態特徵

• Biennials; stems erect, 45–100 cm long, corymbosely branched apically, hirsute.
• Lower cauline leaves obovate-oblong, 12.5–14×5–8 cm, apex short acuminate, base narrowed into a winged petiole, slightly clasping, lyrate-pinnatifid, terminal segments deltoid, lateral segments 2–4 pairs, obovate, irregularly mucronulate-dentate, upper surface green, minutely scabrid, lower surface glaucous, hairy along veins; median cauline leaves oblong to elliptic, 7–11×5–8 cm, lyrate-pinnatifid, base broadly auriculate clasping, terminal segment reniform, lateral segments obovate, 2 or 3 pairs, margins irregularly incised-dentate; upper leaves gradually smaller, ovate-lanceolate.
• Inflorescence loosely corymbose, hirsute; peduncle 6–16 mm long, basal bracteoles 3–4 mm long. Heads erect in bud. Involucre cylindric, 10–15×6–7 mm, bracts glabrous, obtuse, gradually longer upward, outer ones ovate-oblong, 3–4 mm long, median ones oblong-lanceolate, inner ones linear. Florets 25–28; corolla dirty yellow to pale purple, 11–12×0.8 mm.
• Achenes oblong, 4–5×*2–2.3 mm, black, compressed, 3-ridged, beak slender, 2.5–3 mm long. Pappus white, 7 mm long, bristles subequal.
• Chromosome number, 2n = 18 (Peng & Hsu, 1978).

分布

• 台灣 : sunny hillsides from low to mid elevations.
• 世界 : Mainland China.

引證標本

TAIPEI: Hsintien, Liu 195; Huangtitien, Peng 5012. TAOYUAN: Shalun, Peng 7717. HSINCHU: Wufeng, Peng 9368. MIAOLI: Yuanli, Peng 11567; Shihtan, Leu 925. NANTOU: Lushan, Peng 6185; Tungpu, Peng 8212. PINGTUNG: Laiyi, Wu 1201. HUALIEN: Taroko, Peng 12638.

參考文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 1043. 1998.  (Fl. Taiwan 2nd edit.)