Chamaecrista rotundifolia var. rotundifolia
Herbs, perennial, to 0.1–0.7 m. Stems procumbent. Leaves (0.3–)0.7–4.5(–5) cm; petiole 2–8(–10) mm; extrafloral nectary 0; leaflets 1 pair, blades obliquely obovate to broadly oblanceolate, 0.5–4(–4.5) × 0.5–1.5(–2) mm. Racemes 1–3-flowered, axillary. Pedicels (12–)15–45(–60) mm; bracteoles distal to mid pedicel. Flowers: calyx greenish, yellowish and partly reddish, or reddish brown, sepal venation reticulate; corolla yellow, drying pinkish brown or orange-brown, petals to 3–6.5(–7) mm; stamens (4 or) 5, staminodes (0 or)1–3; anthers yellow, (1.7–)2–4.4 mm, similar in size; ovary gray-hairy or yellowish hairy. Legumes straight or slightly curved, linear-oblong, (15–)20–55(–60) × 3–5(–6) mm. Seeds 2.2–3.2(–2.4) mm. 2n = 16.
Phenology: Flowering mid summer–late winter.
Habitat: Openings in woods, waste places, roadsides, disturbed forests, lawns, pastures.
Elevation: 0–100 m.
Distribution
Fla., Mexico (Colima, Jalisco, Michoacán, Nayarit, Oaxaca, Sinaloa), West Indies, Central America, South America.
Discussion
Variety rotundifolia is found in weedy areas in central peninsular Florida.
Selected References
None.