Florestina Cassini (1817: 11)

Soto-Trejo, Fabiola, Schilling, Edward E., Oyama, Ken, Lira, Rafael & Dávila, Patricia, 2016, A taxonomic revision of the genus Florestina (Asteraceae, Bahieae), Phytotaxa 268 (2), pp. 91-109 : 94

Florestina Cassini (1817: 11) .

Type species: Florestina pedata ( Cavanilles 1797: 33) Cassini (1820: 156) .

Annual herbs, 10–130 cm tall. Stems erect, simple or scarcely branched, nearly glabrous to densely pubescent, hairs straight, strigose and/or glandular. Leaves simple or compound, when compound 3–5-foliate or biternately dissected, lower ones opposite, upper ones alternate, petiolate, blades ovate to linear, pubescent, hairs straight or strigose, with or without glandular hairs. Inflorescences terminal, dichotomous or corymbose, 5 to numerous heads. Heads terminal, homogamous, pedunculate. Involucres turbinate. Phyllaries in 1–2 series, equal to subequal, 8–13, green or purplish, margins scarious and often suffused with purple, nearly glabrous to densely pubescent, with or without glandular hairs. Rays absent. Disk florets 6–40, bisexual, white or purplish, tubular, 5-lobed, zygomorphic with two lobes longer than other three; tube and throat well defined, nearly glabrous to densely pubescent, with or without glandular hairs. Anthers 5, sacs rounded at base, apical appendages ovate to obtuse, without glandular trichomes. Style branches flattened, narrowly acuminate, tapered; stigmatic lines terminated by cuspidate appendages, penicillate or nearly glabrous, purple. Achenes obpyramidal, 4-angled, faces smooth or distinctly 3-ribbed, black, nearly glabrous to densely pubescent; pappus of 8–10 ovate-lanceolate scales, sometimes with thickened midribs protruding as a bristle or awn, scales with acute or truncate apex. Chromosome numbers n = 10, 12.