Flora of North America species comparison

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

ascending to erect, branched, 30–80 cm, inconspicuously uncinate-puberulent or glabrescent.

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.

unifoliolate;

stipules ± persistent, narrowly ovate-deltate, 3–3.5 mm;

petiole 6–11 mm;

leaflet blades ovate to narrowly ovate, 30–80 × 10–30 mm, length (2–)2.5–5 times width, apex acute or obtuse, with paler patches along midrib adaxially, surfaces uncinate-puberulent and villous.

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

rachis shortly hirsute or sparsely uncinate-puberulent;

primary bracts broadly ovate, 5–6 mm.

often numerous, slender and flexuous, branched or unbranched;

rachis densely uncinate-puberulent and villous;

primary bracts narrowly ovate, 1–2 mm.

(5–)10–15 mm.

4–10 mm.

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.

calyx 2.5–3 mm, puberulent and sparsely pilose, tube 1 mm;

abaxial lobes 2–3 mm, lateral lobes 2 mm, adaxial connate nearly to apex;

corolla pink to purple, 4–5 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.

margins slightly involute when young, sutures crenate abaxially, sinuate adaxially;

connections adaxial, 1/5 as broad as segments;

segments 3–5, elliptic to obovate, 2.5–6 × 3–3.5 mm, rounded abaxially, convex adaxially, sparsely uncinate-puberulent, sutures glabrous;

stipe 1.5–2.5 mm.

= 22.

= 22.