生活型

herb

形態特徵

• Herbs ascending to erect, to 10 cm tall.
• Phyllotaxis alternate; blade oblong, 1-1.8 cm × 5-8 mm, 2-pinnatisect; segments 5-7 pairs; basal segments linear, apex acuminate; distal lobes usually 3-lobed, apex acuminate. Peduncle 0.7-1.3 mm long.
• Heads discoid, 6-10 mm tall, 2.5-3.5 mm in diam.; receptacle 4-8 mm tall, 1.5-2 mm in diam., apex acute. Involucral bracts in 2 series, obovate to spatulate, margin hyaline; outer bracts 3-3.5 × 1.5-2 mm; inner bracts 2-2.5 × 1.2-1.5 mm. Disc florets tubular, 5-lobed; corolla pale yellow, ca. 1.5 mm long; anther ca. 0.3 mm long.
• Achenes obovate to oblanceolate, ca. 2 mm long, 5-ribbed.

分布

• 世界 : native to Eurasia, and widespread as a cosmopolitan weed.

引證標本

Taichung Hsien, Hoping Hsiang, Lishan, Fushoushan Farm, Apr. 25, 2006, M.-J. Jung y042510 (NCKU).

參考文獻

• Ming-Jer Jung, Gwo-Ing Liao and Chang-Sheng Kuoh-, Taiwania 51(4): 308-316. 2006.