Chrysanthellum americanum (L.) Vatke, Abh. Nat. ver. Brem. 9: 122. 1887. C. indicum DC., Prodr. 5: 631. 1836; Hook.f., Fl. Brit. India 3: 310. 1881.

Herbs, procumbent, annual; stems rigid, grooved, glabrous to scabrous, 4-angular. Leaves deltoid, pinnatifid, succulent; segments oblong or cuneiform, obtusely lobed, membranous at margins; petioles dialated at sheathing base. Heads 5 - 8 mm across, enlarging in fruit. Involucral bracts equalling achenes, oblong to elliptic, 2 - 5 x 1 - 1.5 mm obtuse, strongly nerved with broad membranous margins. Ray florets few, female; corolla yellowish-white, 1 - 1.5 mm, dark veined. Style bifid. Disc florets many, bisexual; corolla tubular, 1.5 - 2 mm. Achenes cuneate-oblong, 2.5 - 3 x 1 mm, grooved, smooth, with thick margins.

Fl. & Fr. July - Dec.

Distrib. India: Uttar Pradesh, Bihar, West Bengal, Madhya Pradesh, Gujarat and Andhra Pradesh.

Madagascar and Tropical Africa.