Flora of North America species comparison

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

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

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.

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-pubescent and sparsely villous;

primary bracts narrowly deltate, 3 mm, pilose.

branched or unbranched;

rachis densely uncinate-puberulent to pubescent;

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

3–9 mm.

5–13 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.

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 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.

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.

= 22.