Botanical Survey of India | Flora of India

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Herbs, erect or diffuse. Leaves opposite or alternate, more or less pinnatisect. Heads heterogamous, radiate. Ray florets uniseriate, female. Disc florets hermaphrodite, fertile. Involucre cylindric-campanulate or hemispheric; bracts uniseriate, subequal. Receptacle shortly fimbriate. Anther base rounded or minutely 2-dentate. Style branches of hermaphrodite florets appendaged, hirtellous. Achenes linear-obconic, 3 - 5-angled, striate, pilose. Pappus of 10 setae.

Mexico and C. America; ca 50 species, 1 in India, naturalized.




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