Citation: Ruiz Lopez & Pavón, Fl. Peruv. Prodr. 10, t. 24 (1794).

Derivation: After Mariano Martinez Galinsoga, a Director of the Botanical Garden of Madrid in the late 18th century.

Synonymy: Not Applicable

Common name: None

Description:
Annual herbs; leaves cauline, opposite, flat, simple, entire or dentate.

Capitula pedunculate, in loose terminal cymes, heterogamous, radiate, small; involucres hemispherical to campanulate; bracts few, herbaceous to membranous, 2-3-seriate; receptacle conical, with prominent scarious scales; ray florets female, fertile, with small ligules.

Ray achenes curved, compressed, clasped by the involucral bracts; receptacular scales narrow, often 2-fid or 3-fid; pappus of bristles or absent; disk florets bisexual, fertile, tubular, pentamerous; anthers sagittate at the base, with a short rounded appendage at the apex; style branches linear, recurved, with pointed terminal appendages, papillose on the outer face; disk achenes angular; pappus of long scales, awned, toothed or fimbriate. (J. M. Canne (1977) Rhodora 79:319-389).

Distribution:  14 species native to North and South America; 1 introduced in Australia.

Biology: No text

Author: Not yet available