Flora of North America species comparison

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

erect or ascending, usually striate, angled, 30–90 cm, densely 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 caducous, linear-lanceolate, 1–4 mm;

petiole 3–13 mm;

leaflet blades somewhat paler abaxially, narrowly ovate-oblong, lateral slightly smaller than terminal, apex acute, lateral veins looped within margin, margins revolute, surfaces strigulose;

terminal blade 30–80 × 6–20 mm, length 3–5 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;

primary bracts caducous, broadly deltate, 6 mm.

3–9 mm.

7–10 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 4 mm, glabrous, tube 1.5–2 mm;

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

corolla purple, 10–12 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, crenate adaxially;

connections slightly adaxial, 1/2 as broad as segments, sometimes contorted (twisted);

segments 2–5, elliptic, 5–6 × 3 mm, rounded abaxially, slightly rounded adaxially, uncinate-pubescent throughout;

stipe 1–2 mm.

= 22.