Flora of North America species comparison

decumbent or decumbent-assurgent, branched, 30–120 cm, densely uncinate-pubescent.

erect, mostly unbranched, 30–300 cm, densely (sparsely in age) villosulous, also densely uncinate-puberulent and -pubescent.

tri-foliolate;

stipules caducous, narrowly ovate, 5+ mm;

petiole 20–30 mm;

leaflet blades ovate-elliptic to narrowly so, apex acute to obtuse, surfaces densely appressed-pubescent abaxially, sparsely so adaxially;

terminal blade (20–)35–60 × 8–10(–15) mm, length 2.5–4 times width.

trifoliolate;

stipules caducous, narrowly ovate to ovate, 3–7 mm;

petiole 15–40 mm;

leaflet blades broadly ovate or broadly rhombic, base acute to cuneate or truncate, apex acute to acuminate, surfaces densely velvety or villous, especially on veins abaxially, uncinate-puberulent and obscurely strigose on veins adaxially;

terminal blade 50–120(–150) × 35–90 mm, length 1–1.5(–2) times width.

axillary and terminal, branched or unbranched;

rachis patent uncinate-puberulent to pubescent;

primary bracts closely imbricate before anthesis, caducous, ovate, 5 mm.

branched or unbranched;

rachis uncinate-pubescent and sparsely villous;

primary bracts narrowly deltate, 3 mm, pilose.

5–10 mm.

3–9 mm.

calyx 3–4 mm, sparsely pubescent, tube 1 mm;

abaxial lobes 3 mm, lateral lobes 2 mm;

corolla pink or purple to blue, 7–9 mm.

calyx 2–3 mm, spreading-pilose, tube 2 mm;

abaxial lobes 2.5–4.5 mm, lateral lobes 2–4 mm;

corolla purple to pink or pallid lavender, 7–8 mm.

sutures undulate abaxially, sinuate adaxially;

connections adaxial, 1/4–1/3 as broad as segments;

segments 4–7, semiorbiculate, 3–5 × 3–3.5 mm, rounded abaxially, slightly convex adaxially, glabrous or sparsely uncinate-puberulent throughout;

stipe 1–2 mm.

sutures subdentate abaxially, sinuate adaxially;

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

segments (3 or)4 or 5, rhombic, 5–8(–9) × 3–3.5 mm, symmetrically angled abaxially, straight or convex adaxially, moderately to densely uncinate-puberulent throughout;

stipe 3–6 mm.

= 22.