Aeschynomene rudis
red aeschynomene, rough jointvetch, zigzag jointvetch
erect, to 2 m, glabrous or moderately glandular-hispid.
4–10 cm;
stipules peltate, 7–15 × 2–3 mm, apex acute;
leaflets 30–40(–50), blades 1-veined, nearly symmetric, oblong to linear-oblong, 6–15 × 2–3 mm, margins usually entire, sometimes ciliate-denticulate, apex obtuse, surfaces glabrous.
1–7-flowered, racemes, axis glabrous or glandular-hispidulous.
calyx 5–8 mm, bilabiate, abaxial lip 3-dentate, adaxial lip shallowly 2-lobed, glabrous, margins ciliate;
corolla yellow, often drying somewhat purplish, (8–)10–15 mm, banner glabrous, glandular-ciliate;
gynophore 3–6(–10) mm, continuous with proximal segment, glabrate.
dark brown or black, 3–3.5 × 2–2.5 mm.
abaxial margin crenate, adaxial margin ± straight, sutures between segments well developed, margins not separating from valves;
segments (3–)6–12, subquadrate, 4–6 × 4–6 mm, reticulate venation inconspicuous to moderately conspicuous, center of each usually muricate or verrucose, faces subglabrous or lightly glandular-hispidulous, hairs bulbous-based.
Aeschynomene rudis
Aeschynomene rudis was introduced into the United States in the nineteenth century and was generally overlooked (J. P. Carulli et al. 1988).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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