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Flora of Taiwan | Family List | Compositae | Taraxacum

Taraxacum officinale Weber in Wiggers, Prim. Fl. Holsat. 56. 1780; Peng, Bot. Bull. Acad. Sin. 19: 85. 1978.

西洋蒲公英

Taraxacum officinale

Credit: Ching-I Peng (HAST)

Leaves commonly sparsely hairy on midrib on lower surface, otherwise generally glabrous, or sometimes completely so, oblanceolate, 6-40×*0.7-15 cm, somewhat runcinate-pinnatifid or lobed (terminal lobe tending to be larger than others), tapering to a narrow, scarcely or obscurely winged petiolar base, but leaves varying to deeply cleft and with a small terminal segment; scapes 5-50 cm tall, glabrous or somewhat villous, especially upward. Involucre mostly 1.5-2.5 cm long; inner bracts mostly 13-20, usually not or scarcely corniculate, at first erect, finally reflexed, mature achenes and pappus then forming a conspicuous ball; outer bracts reflexed, slightly shorter and scarcely wider than inner; achenes 3-4 mm long, pale-brown or stramineous, muricate apically or sometimes to near base, beak 2.5-4 times as long as body. Chromosome number, 2n = 24 (Peng & Hsu, 1978).

TAIPEI: Taipei City, Peng 12482. TAOYUAN: Lungtan, Peng 13640. TAIHUNG: Lishan, Chiu 3298. CHIAYI: Alishan, Leu 168.

Native of Eurasia, now a cosmopolitan weed of temperate areas.


 

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