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FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Soliva

2. Soliva anthemifolia (Jussieu) Sweet, Hort. Brit. 243. 1826.

Button burrweed

Gymnostyles anthemifolia Jussieu, Ann. Mus. Natl. Hist. Nat. 4: 262, plate 61, fig. 1. 1804; Soliva mutisii Kunth

Plants mostly 3–15(–30+) cm (high or across), ± villous, glabrescent (sometimes stoloniferous, ± mat-forming). Leaves mostly basal; blades ± obovate to spatulate, 3–8(–15) cm, 2–3-pinnati-palmately lobed. Heads mostly clustered in leaf axils (at ground level), rarely scattered along stems. Involucres 4–8+ mm diam. Pistillate florets (20–)50–100+ in 1–8+ series. Disc florets 2–4+; corollas 1.5–2 mm. Cypselae: bodies oblanceolate to cuneate-oblong, 1.5–2+ mm, wings transversely rugulose or ribbed on proximal 2/3, shoulders not spinose laterally, faces distally villous to pilose, sometimes glabrescent; pappi 0 (persistent stylar sheaths indurate, spinelike, 1.5–3 mm, usually inflexed). 2n = 118 (Punjab).

Flowering Mar–May(–Aug). Disturbed sites; 10–100+ m; introduced; Ark., Fla., La., Tex.; South America; introduced also in Mexico, Asia, Australia.


 

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