Subshrubs, 1 m. Stems erect, subglabrous. Leaves: stipules free from petiole, linear, 6–11 mm, 2 times length of corresponding petiole; petiole 3–7 mm, 1/10 length of blade, subglabrous; blade lanceolate-elliptic to subrhombic, 3–9 cm, 2.5–5 times longer than wide, base truncate, margins crenate or serrate to base, apex usually acute, surfaces glabrous. Inflorescences axillary solitary or paired flowers. Pedicels articulated, 0.5–2 (–3) cm, usually 2–3 times calyx length, 1/4–1/2 length of subtending leaf. Flowers: calyx ribbed, 7–10 mm, glabrous, lobes ovate; petals yellow, 15 mm; staminal column hairy; style 10–12-branched. Schizocarps subconic, 6–7 mm diam., minutely hairy apically; mericarps 10–12, 5 mm, laterally reticulate, apex spined, spines 1.5 mm.

Phenology: Flowering summer.
Habitat: Disturbed sites, waste places
Elevation: 0–30 m

Distribution

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Fla.

Discussion

Sida rubromarginata has been reported from Hillsborough, Leon, and Sarasota counties.

Selected References

None.

Lower Taxa

None.

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