Wedelia trilobata

南美蟛蜞菊

naturalized

Wedelia trilobata (L.) Hitchc.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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Hitchc., Annual Report of the Missouri Botanical Garden 4: 99. 1893. (Rep. (Annual) Missouri Bot. Gard.)

無

中

美洲蟛蜞菊. 維多利亞菊. 黃花墨菜. 黃花曲草. 滷地菊. 鹿舌草. 龍舌草. 馬蘭草. 路邊菊. 田黃菊. 地錦花. 穿地龍. 三裂葉蟛蜞菊.
英

Singapore daisy. Creeping ox-eye. Trailing daisy. Rabbits paw. Wedelia. Yellow dots.

Wu, Yang, Teng, Chang, Yang and Hsieh, Taiwania 55(2): 148. 2010.
Chen, The Invasive Alien Plant in Miaoli 128. 2006. (Invas. Al. Pl. Miaoli, 苗栗地區重要外來入侵植物圖鑑)

herb

Perennial herbs, procumbent; stems stout, glabrous or pubescent, seldom scabrous.
Leaves opposite, somewhat succulent, to 18 cm long, elliptic or lanceolate, often with triangular lobes and conspicuous marginal teeth, apex acute, base cuneate, glabrous or sparsely pubescent, sometimes scabrous; petiole distinct but less than 5 mm long.
Heads solitary on elongate peduncle, radiate; involucre green, bracts lanceolate, ciliate, obscurely nerved, 10–15 mm long, innermost bracts narrower; ray florets 4–8, showy, yellow, 15–20 mm long, 3 or 4 denticulate, fertile; disc florets yellow, numerous, ca. 2 cm long, corolla 5–6 mm long.
Achenes blackish, sometimes mottled, clavate, angled, ca. 5 mm long. Pappus of fused scales, coroniform.

台灣 : occasionally naturalized on slopes and along roadsides at lower elevations.
世界 : Native of the New World tropics, widely cultivated as an ornamental ground cover and escaped in many countries.