Onoserideae

Annual or perennial herbs, shrubs, sometimes dioecious, without latex; leaves alternate; heads radiate, medium to large; involucre campanulate to hemispheric, bracts imbricate; receptacle naked, alveolate; corollas red, orange, purple, pink, white, or bicolor white-purple; ray corolla bilabiate with a 3-toothed outer lobe and a 1–2-toothed inner lobe, rarely absent; disc corollas with five lobes, the lobes short to long, equal or unequal in length; anther apical appendage acute or truncate, thecae with spurs (calcarate) and tails (caudate); pollen psilate; styles thick, apex rounded, glabrous, rarely papillose on abaxial surface of style arms; achenes elliptical to tur- binate; pappus of 2–4-seriate bristles.

Diagnostic Features

Involucral bracts imbricate; co- rollas often brightly colored; ray corolla bilabiate (rarely absent); disc corollas tubular with five lobes equal or un- equal in length; anther apical appendage acute or truncate, thecae calcarate and caudate; styles thick, apex rounded, glabrous, rarely papillose; achenes elliptical to turbinate, glabrous or pubescent; and pappus of 2–4-seriate bristles.

Geographic distribution

Southern South America but also in the Andes.