Flora of North America species comparison

erect or ascending, to 300 cm, pubescent or glabrescent.

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

trifoliolate;

stipules usually persistent, narrowly ovate-deltate, 5–10 mm;

petiole usually 15–20 mm;

leaflet blades elliptic to ovate, apex obtuse or acute, surfaces finely spreading-villosulous to substrigose abaxially, uncinate-puberulent or glabrescent adaxially;

terminal blade 20–90 × 15–45 mm, length 1.5–4 times width.

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.

unbranched;

rachis densely patent uncinate-pubescent;

primary bracts caducous, narrowly ovate, 6–7 mm.

branched or unbranched;

rachis uncinate-puberulent;

primary bracts narrowly ovate, 1.4–2.6 mm.

persistent with calyx-remnant at top after loments drop, 5–9 mm.

5–15 mm.

calyx 2–3.5 mm, uncinate-puberulent, lobes pilose, tube 1 mm;

abaxial lobes 1.5–2.5 mm, lateral lobes 1–2 mm;

corolla purple, 5–8 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.

sutures symmetrically crenate abaxially, straight or slightly sinuate adaxially;

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

segments 4–8, semiobovate, 3.5–5 × 2.5–3 mm, broadly rounded abaxially, straight or barely convex adaxially, uncinate-puberulent;

stipe 1.5–2 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.

= 22.