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carpet burrweed, carpet burweed, common soliva, field burrweed, lawn burrweed, prickly soliva, South American soliva

Habit Plants (1–)2–5(–25+) cm (high or across), ± villous, glabrescent (not stoloniferous, stems purplish, prostrate to ascending, often rooting at nodes).
Leaves

basal and cauline;

blades ± oblanceolate, 1–2(–3)+ cm, 2(–3)-pinnati-palmately lobed.

Heads

mostly scattered along stems.

Involucres

2–4(–5) mm diam.

Disc florets

4–8+;

corollas 1.5–2.5 mm.

Cypselae

bodies ± obovate to lanceolate, (1.5–)2.5–3+ mm, usually winged (wings entire or ± sinuate to incised, each shoulder usually distally projecting as spinelike tooth), faces glabrous or ± scabrellous to hirtellous;

pappi 0 (persistent stylar sheaths indurate, spinelike, 1–2+ mm, erect or slightly inflexed).

Pistillate

florets 5–8(–17+) in 1–2+ series.

2n

= ca. 92 (as S. pterosperma), 110+ (from Portugal), 118–120.

Soliva sessilis

Phenology Flowering Mar–Jun(–Dec).
Habitat Disturbed sites, lawns, roadsides
Elevation 0–600 m [0–2000 ft]
Distribution
from FNA
AL; AR; CA; FL; GA; LA; MS; NC; OK; OR; SC; TX; VA; WA; BC; South America [Introduced in North America; introduced also in Europe]
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Anthemideae > Soliva
Sibling taxa
S. anthemifolia, S. stolonifera
Synonyms S. daucifolia, S. pterosperma
Name authority Ruiz & Pavón: Syst. Veg. Fl. Peruv. Chil., 113, plate 24. (1798)
Source Flora of North America vol. 19, p. 546.
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