Florestina, Cassini, 1817

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

Key to the species of Florestina

1. Phyllaries with glandular trichomes; disk florets purplish .............................................................................................................. 2.

– Phyllaries without glandular trichomes; disk florets yellowish white ............................................................................................. 3.

2. Disk florets 6.0–7.0 mm long; pappus 4.0– 6.5 mm long .................................................................................................. F. latifolia

– Disk florets 2.5–3.0 mm long; pappus 1.5–4.0 mm long ............................................................................................. F. platyphylla

3. Leaf blades or leaflets with glandular trichomes; achenes mostly glabrous but with hairs at the base; pappus of 8 lanceolate equals scales, 2.5–4.5 mm long, apex predominantly acute, awned .......................................................................................... F. purpurea

– Leaf blades or leaflets rarely with glandular trichomes; achenes pubescent; pappus of 8–10 ovate to obovate scales, 0.5–2.0 mm long, apex rounded or truncate ........................................................................................................................................................ 4.

4. Stems with short glandular trichomes, 0.25–1.0 mm long .............................................................................................................. 5.

– Stems with long glandular trichomes, 1.5–3.0 mm long ..................................................................................................... F. pedata

5. Leaflets conspicuously and irregularly lobed ....................................................................................................................... F. lobata

– Leaflets entire .................................................................................................................................................................... F. tripteris