Flora of North America species comparison

erect or ascending, usually striate, branched, 10–80 cm, pubescent.

ascending or erect, usually striate, unbranched to inflorescence, 50–100 cm, uncinate-puberulent.

trifoliolate;

stipules caducous, narrowly deltate to subulate, 3–4 mm;

petiole 10–40 mm;

leaflet blades narrowly ovate to ovate, apex acute to acuminate, surfaces densely uncinate-puberulent and pilose abaxially, uncinate-puberulent and pilose adaxially;

terminal blade 20–100 × 7–25 mm, length 4–8 or 2–3 times width.

trifoliolate;

stipules mostly persistent, linear to narrowly ovate-deltate, 2–5 mm;

petiole 6.5–18 mm;

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

terminal blade 35–60(–80) × 4–7 mm, length 8–10 times width.

branched or unbranched;

rachis uncinate-puberulent;

primary bracts narrowly ovate, 1.4–2.6 mm.

branched or unbranched;

rachis densely uncinate-puberulent to pubescent;

primary bracts narrowly lanceolate-triangular, 1.4–2 mm.

5–15 mm.

5–13 mm.

calyx 1–1.5 mm, puberulent, tube 0.5 mm;

abaxial lobes 1–1.5 mm, lateral lobes longer than tube;

corolla pink, drying greenish yellow, 3–4 mm.

calyx 2.5–3.5 mm, uncinate-puberulent to pubescent on lobes, tube 1 mm;

abaxial lobes 2–2.5 mm, lateral lobes 1.5–2 mm;

corolla pink or purple, 4 mm.

sutures subequally incised, spirally arranged between young segments when young;

connections adaxial, 1/8 as broad as segments;

segments 2–4, proximal segments subrhombic, 4–6 × 2.5–3.5 mm, irregularly involute, uncinate-pubescent, distal segment semiorbiculate or broadly deltate, much larger than proximal segments, not contorted, 7–10 × 4–5 mm, glabrous, sutures uncinate-puberulent;

stipe 1 mm.

sutures deeply crenate abaxially, with narrow connection between segments, nearly straight adaxially, slightly sinuate at isthmus;

connections adaxial, 1/5 as broad as segments;

segments 1 or 2(or 3), semiorbiculate, 4.5–6 × 3–4 mm, symmetrically rounded abaxially, incipiently or plainly concave adaxially, densely uncinate-puberulent, more densely on sutures;

stipe 1.5 mm.

= 22.