Flora of North America species comparison

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

erect, 50–100 cm, sparsely to densely pilose or villous, usually patent uncinate-puberulent and -pubescent, sometimes glabrescent.

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 ± persistent, subulate to narrowly ovate, 4.5–9.5 mm;

petiole 10–60 mm;

leaflet blades often pale green abaxially, ovate to narrowly ovate, apex acute, surfaces slightly or visibly strigulose abaxially, sparsely puberulent or nearly glabrescent adaxially;

terminal blade 40–110 × 15–30 mm, length 2.5–3.5 times width.

unbranched;

rachis densely patent uncinate-pubescent;

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

terminal and branched, or unbranched from distal axils;

rachis villous and uncinate-pubescent, sometimes appearing glabrescent;

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

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

4–8 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 3.5–5 mm, densely uncinate-puberulent and sparsely pilose, tube 1–1.5 mm;

abaxial lobes 3–3.5 mm, lateral lobes 2 mm;

corolla usually blue-violet, rarely white, 8–11 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 crenate abaxially, repand or sinuate adaxially;

connections adaxial, 1/2 as broad as segments;

segments 3–5, semiorbiculate, 4–8 × 4–5 mm, rounded abaxially, convex adaxially, densely uncinate-puberulent;

stipe 2(–3) mm.

= 22.

= 22.