Vines, herbaceous. Stems pros­trate (twining distally), hirtel­lous, hairs grayish. Leaves usually unifoliolate, distalmost rarely trifoliolate; stipules per­sistent, ovate-lanceolate, 3–5 × 1.5–2 mm, apex acuminate; petiole 20–40 mm, densely hir­sute; leaflet blades reniform or orbiculate, 20–50 × 20–70 mm, leathery, gland-dotted, base truncate or subcordate, apex obtuse, obscurely mucronulate, sur­faces reticulate and tomentose-woolly abaxially, rugose and finely strigose adaxially. Inflorescences in clusters on peduncles, shorter than leaves, 2–6 cm. Pedicels 3–8 mm. Flowers: calyx 14–16 mm, hirsute, tube 2 mm, lobes lanceolate or elliptic, laterals 12–14 mm, adaxials 5 mm; corolla yellow-orange; banner obovate, 10–12 × 5–6 mm, emarginate, puberulent, with a pair of internal callosities; wings oblong, 9–11 × 2–2.5 mm, glabrous; keel 9–10 × 2–2.5 mm, glabrous; stamens 9–10 mm. Legumes ovoid-oblong, compressed, 10–18 × 5–9 mm, gland-dotted, tomentose. Seeds brown, black, or mottled, subglobose, compressed, 3.5–4 × 3.5–4 mm.

Phenology: Flowering year-round.
Habitat: Sandy soils in pine and oak woodlands, fields, disturbed areas.
Elevation: 0–20 m.

Distribution

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Fla., N.C.

Discussion

In North Carolina, Rhynchosia michauxii is found only in Brunswick County.

Selected References

None.

Lower Taxa

None.