生活型

herb

形態特徵

• Annual herbs, erect, 5–120 cm tall, with a tap root. Stems terete, soft-pilose with spreading hairs and glands, viscid-tomentose particularly on younger parts and on inflorescence axes.
• Leaves ovate-oblong, chartaceous, 9–11×3.5–4 cm, apex obtuse to apiculate, base attenuate, margins closely doubly serrate, densely silky-villous on both surfaces with soft multicellular hairs and glands, veins 5–7 pairs.
• Heads in terminal, narrow, compact, spiciform panicle, subsessile to pedunculate. Involucre campanulate, bracts in 3 or 4 series, outer ones shorter, linear-lanceolate, 3–4×0.6–0.8 mm, densely soft-villous and with multicellular hairs and glands; inner ones linear, 5–6×0.2–0.3 mm, margins scarious, ciliate. Central florets pinkish-purple apically, whitish or yellowish at base, 3.5–4.5 mm long, with 5 triangular lobes, lobes pubescent and with sessile glands. Outer florets 3.5–4.5 mm long, 2- or 3-lobed, glandular. Receptacle convex, alveolate, glabrous, 1.8–2 mm across.
• Achenes oblong, 0.8×0.2–0.3 mm, pubescent. Pappus white, 3–4 mm long.

分布

• 台灣 : wastelands at low elevations in southern Taiwan.
• 世界 : Africa, southern and southeastern Asia, and China.

引證標本

NANTOU: Jenai, Yang 6015; Shuili, Peng 11381. YUNLIN: Kukeng, Ou s. n. 1981. TAINAN: Nanhua, Peng 10541. PINGTUNG: Pingtung Agriculture School, Yang & Ho 166. HUALIEN: Tienhsiang, Chen 91.

引用文獻

• PENG, Ching-I & CHUNG, Kuo-Fang; LI, Hui-Lin, Flora of Taiwan, second edition 4: 884. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)