Dyssodia tenuifolia Loes. in Bull. Herb. Boiss. Ser. II, 6: 866. 1906. Hymenatherum tenuifolium Cass., Dict. 22: 313. 1821 - 22; Randeria in J. Bombay Nat. Hist. Soc. 53: 216. 1956.

Herbs, annual, erect, 15 - 20 cm high; stems finely pubescent. Leaves 2 - 5 x 1 - 3 cm, deeply pinnatisect; lobes opposite, somewhat filiform. Heads ca 2 cm across, peduncled; peduncles 5 - 9 cm long, naked or bracteate; bracts subulate-lanceolate, 2 - 3 cm long. Involucral bracts oblong-cuneate, 3-lobed at the apex, ciliate on the margins, partially connate at base. Corolla yellow, of hermaphrodite florets tubular; tube 2 - 3 mm long, uniformly dilated upwards; lobes 5, ovate, ca 1 mm long; of female florets ligulate, 6.9 x 1.5 - 2.5 mm, 3-lobed. Achenes black, oblong-obconical, 3 - 4 mm long, angled and ribbed. Pappus uniseriate, setose, unequal.

Distrib. India: Delhi, Rajasthan, Madhya Pradesh, Maharashtra and Karnataka.

Native of C. America.