Bidens bipinnata

 

Bidens bipinnata

İki suketeni

 

Almost glabrous annual 10-100 cm. Leaves petiolate, pinnate, with up to 4 pairs of pinnae, the lower of which are lobed almost to the midrib; lobes rhombic to broadly lanceolate, entire or coarsely toothed, sparsely hairy on the veins  beneath. Capitula 5-10 mm in diameter, longer than wide; outer involucral bracts shorter than inner, herbaceous, all lanceolate to oblong. Receptacular scales shorter than the achenes, linear, scarious, with dark lines. Outer achenes  8-10 mm, the inner 10-18 mm, linear, papillose, with few, short, erect setae; bristles 2-3, 2-4 mm, erecto-patent at maturity. Fields and roadsides.  

Naturalized in S. & S.C. Europe  .

 

 

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