Flora of North America species comparison

erect or ascending, branched, 40–100 cm, slightly uncinate-pubescent and pilose or glabrescent.

ascending or erect, 50–100 cm, inconspicuously uncinate-puberulent.

trifoliolate;

stipules mostly persistent, broadly ovate, 4–10 mm, base subamplexicaul;

petiole 30–40 mm;

leaflet blades broadly ovate-elliptic or ovate to narrowly ovate, apex acute, surfaces uncinate-puberulent;

terminal blade 20–70(–100) × 10–20(–50) mm, length 1.8–2 times width.

trifoliolate;

stipules caducous, narrowly deltate, 3 mm, glabrous;

petiole 5–20 mm;

leaflet blades linear, leathery, usually folded and appearing narrower, apex acute or obtuse, surfaces reticulate-veined adaxially, glabrous or sparsely puberulent abaxially, glabrous adaxially;

terminal blade 30–60(–80) × 5–7 mm, length 8–10 times width.

branched or unbranched;

rachis bulbous-villous and uncinate-puberulent;

primary bracts caducous, subulate, 1 mm.

branched or unbranched;

rachis uncinate-pubescent and villous;

primary bracts ovate, 2.5 mm.

10–20 mm, patent uncinate-pubescent.

5–10 mm.

calyx 1.5–2 mm, pilose and uncinate-puberulent, tube 0.8 mm;

abaxial lobes 1 mm, lateral lobes 0.8–1 mm;

corolla pink-purple, fading greenish, 4–5 mm.

calyx 1.5–2 mm, uncinate-puberulent, tube 0.8–1 mm;

abaxial lobes 1 mm, lateral lobes 0.7–0.8 mm;

corolla pink, 4–5 mm.

sutures subequally deeply crenate;

connections central, 1/8–1/7 as broad as segments;

segments 3–6, rounded, 6–10 × 5–7 mm, rounded, sparsely pubescent, at least on sutures;

stipe 1(–2) mm.

sutures crenate abaxially, sinuate adaxially;

connections adaxial, 1/3–1/2 as broad as segments;

segments (1 or)2 or 3, semiorbiculate, 3.5–5 × 3 mm, symmetrically rounded abaxially, convex adaxially, densely uncinate-puberulent throughout;

stipe 0.5–3 mm.