Flora of North America species comparison

prostrate, densely branched, 20–80 cm, ascending-pilose or strigose.

prostrate, (50–)100–200(–300) cm, villous and uncinate-puberulent.

trifoliolate;

stipules persistent, narrowly ovate, 3–5 mm;

petiole 3–7.5 mm;

leaflet blades broadly obovate or cuneate-obovate, often folding downwards, apex emarginate, surfaces usually sparsely uncinate-puberulent or subappressed-pilose along midrib abaxially, rarely entire surface, glabrous adaxially;

terminal blade 5–10 × 3–11 mm, length 0.8–1.2 times width.

trifoliolate;

stipules mostly persistent, reflexed, broadly ovate, 5–12 mm, base obliquely cordate, subamplexicaul;

petiole 2–4.6 mm;

leaflet blades transversely elliptic, orbiculate, or broadly ovate, apex emarginate, retuse, rounded, or obtuse, surfaces densely spreading-villous abaxially, appressed-villous adaxially;

terminal blade 20–60 × 25–55 mm, length 0.8–1.2 times width.

terminal fascicles opposite distal leaf, appearing axillary, unbranched;

rachis pubescent;

primary bracts narrowly ovate, 4 mm.

terminal or axillary and erect, usually unbranched, rarely branched;

rachis shortly hirsute or sparsely uncinate-puberulent;

primary bracts broadly ovate, 5–6 mm.

8–12 mm.

(5–)10–15 mm.

calyx 2.5–3 mm, appressed-pubescent, tube 1.2 mm;

abaxial lobes 1.5–1.7 mm, lateral lobes 1.5–1.7 mm, adaxial lobes deeply 2-toothed;

corolla pale pink to purplish, 4–5 mm, keel distinctly longer than wings.

calyx (4–)5–6 mm, uncinate-puberulent and sparsely pilose, tube 1.5 mm;

abaxial lobes 3–5 mm, lateral lobes 3.5–4.5 mm;

corolla pink, fading blue-purple, 9–11 mm.

sutures weakly crenate abaxially, with broad connection between segments, barely sinuate adaxially;

connections 2/3–4/5 as broad as segments;

segments 3–5, nearly square, 2.5–3.5 × 2.5–3 mm, symmetrically convex abaxially, slightly concave adaxially, inconspicuously uncinate-pubescent or glabrescent;

stipe 0 mm.

sutures deeply crenate abaxially, crenate adaxially;

connections adaxial, 1/6–1/4 as broad as segments;

segments 3–6(or 7), subrhombic to elliptic, 4.5–7.5 × 4–5 mm, reticulate, obtusely angled abaxially, convex adaxially, uncinate-puberulent throughout;

stipe 3–6 mm.

= 22.

= 22.