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FNA | Family List | FNA Vol. 21 | Asteraceae | Asteraceae tribe Heliantheae

187m.15. Asteraceae Martinov (tribe Heliantheae) subtribe Flaveriinae Lessing, Syn. Gen. Compos. 235. 1832.

Annuals, perennials, or subshrubs, 10–80 cm (often ± succulent). Leaves cauline; opposite; petiolate or sessile; blades (1- or 3-nerved) oblong, oblong-ovate, lanceolate, linear, or filiform, margins entire or toothed, faces glabrous, glabrescent, or puberulent. Heads radiate or discoid, in glomerules or corymbiform to paniculiform arrays. Calyculi 0 or of 1–2 bractlets. Involucres campanulate, cylindric, obconic, turbinate, or urceolate. Phyllaries persistent, 2–8 in ± 1 series (distinct, linear to oblong, subequal, ± succulent to membranous or scarious). Receptacles flat to convex, epaleate. Ray florets 0, or 1–6, pistillate, fertile; corollas yellow. Disc florets 1–60[–100+], bisexual, fertile; corollas yellow, tubes shorter than or about equaling the funnelform to campanulate throats, lobes 5, deltate; anther thecae pale; stigmatic papillae in 2 lines. Cypselae cylindric to clavate or ± compresssed, linear-oblong to oblanceolate, 10–15-ribbed, glabrous or hairy; pappi 0, or persistent, coroniform, or of 2–5 ovate, scarious scales, or of 20–25+ unequal bristles, or of 5 scales plus 5 bristles (all in 1 series, sometimes connate).

Genera 3, species 27 (3 genera, 10 species in the flora): mostly subtropical, tropical, and warm-temperate New World.

As noted by H. Robinson (1981), traditionally, Flaveria and Sartwellia were treated in Helenieae, Haploësthes in Senecioneae.


1 Disc florets 18–30(–60); pappi of 20–25+ bristles   325 Haploësthes, p. 245
+ Disc florets 1–15; pappi 0, or coroniform, or wholly or partly of scales   (2)
       
2 (1) Ray florets 3–5; pappi of 5 erose scales alternating with 5 setiform scales or bristles (sometimes all 10 elements basally connate)   326 Sartwellia, p. 246
+ Ray florets 0 or 1; pappi 0, or coroniform, or of 2–4 hyaline scales   327 Flaveria, p. 247

Lower Taxa


 

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