生活型

herb

形態特徵

• Large annual herbs, stems erect, with odor, 1-2 m tall.
• Leaves slightly glossy green, pungent, glabrous, pinnately compound; leaflets 9-17, linearlanceolate, margins finely serrulate, with orange translucent glands, 2-4 cm long.
• Heads numerous, usually in flat-topped cymes; involucre cylindrical, yellowish green, 8-14 mm high, 2-3 mm wide, apex 3-5-toothed; ray florets usually 3 per head, rays 1-2 mm long; disc florets usually 3-5 per head, corollas white, ca. 2.5 mm long; pappus consists of 1-2 unequal awn-like scales, 2-3 mm long, 3-5 ovate to lanceolate scales, 0.5-1 mm long.
• Achenes cylindrical, dark brown to black, 6-8 mm long.
• <i>Tagetes</i> minuta is often found growing in disturbed areas during early successional stages. According to our field observation, we found that it spreads on forest roadside and adjacent to forest margin as common weed.

分布

• 台灣 : in the middle-high mountain region of Taichung County of central Taiwan.
• 世界 : Native in southern South America. Introduced to Europe, Asia, Africa, adagascar, India, Australia, and Hawaii.

引證標本

Taichung Co., Hoping Township: Tahsuehshan #200 Forest Road, elev. 1400 m, Nov. 14, 2004, C.M. Wang 7898 (TNM); Dec. 28, 2004, C.M. Wang 7996 (TNM); Aug. 30, 2005, C.M. Wang 8192 (TNM); TANZANIA. Arusha, Arumeru District: Ngaramtoni Ya Chini, elev. 1380 m, July 17, 1999, W. Kindeketa 18 (TNM); Arusha, Ngorongoro District: Ngorongoro Crater, Misigiyo, elev. 2270 m, June 17, 1997, P. Metele 4 (TNM); Kilimanjaro, Same District: Mongoloma-Hemkwazu, elev. 680 m, Sep. 16, 1999, J. A. Mlangwa & J. Amani 581 (TNM).

參考文獻

• Chiu-Mei Wang and Chih-Hsiung Chen, Taiwania 51(1): 32-35. 2006.