Flora of North America species comparison

erect or ascending, branched, 50–200 cm, conspicuously or sparsely villous and uncinate-pubescent.

erect, branched, angled and grooved, 40–60 cm, uncinate-puberulent and -pubescent, also sparsely pilose.

trifoliolate;

stipules mostly persistent, usually reflexed, broadly or narrowly ovate, 5–13 mm, base oblique, often auriculate, subamplexicaul;

petiole 30–60 mm;

leaflet blades ovate, thick, papery, apex acute to gradually acuminate, surfaces densely uncinate-puberulent abaxially, uncinate-puberulent and pubescent on veins adaxially;

terminal blade 50–130 × 30–100 mm, length 1.5–2 times width.

trifoliolate;

stipules ± persistent, reflexed, broadly or obliquely ovate, 7–8 mm, base subamplexicaul;

petiole 10–50 mm;

leaflet blades usually ovate, rhombic to broadly ovate, or semiorbiculate, rarely narrowly ovate, base truncate or broadly obtuse, apex acute, surfaces densely villosulous abaxially, uncinate-puberulent and pilose adaxially;

terminal blade 50–100 × 40–75 mm, length usually less than 2 times width.

paniclelike, branched;

rachis densely patent bulbous-villous and uncinate-puberulent;

primary bracts caducous, narrowly ovate, 4–6 mm.

usually unbranched;

rachis densely patent uncinate-pubescent;

primary bracts broadly ovate, 4.5–7 mm.

persistent, 8–13 mm.

5 mm.

calyx 3–5 mm, sparsely or densely puberulent, tube 1 mm;

abaxial lobes to 3 mm, lateral lobes 1 mm;

corolla usually purple to pinkish, rarely white, 9–13 mm.

calyx 2–2.5 mm, uncinate-puberulent, tube 1 mm;

abaxial lobes 1–1.5 mm, lateral lobes 0.7 mm;

corolla blue-green, 6–7 mm.

sutures dentate or crenate abaxially, sinuate adaxially;

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

segments 4–6, broadly elliptic, 6.5–13 × 4–7 mm, obtusely angled abaxially becoming round, convex adaxially, uncinate-puberulent and villous, hairs particularly dense on sutures and between segments;

stipe 2.5–6 mm.

margins ± involute and contorted, sutures deeply crenate abaxially, shallowly dentate adaxially;

connections central, 1/5 as broad as segments;

segments (1–)3–5, subrhombic to semiovate, 7–15 × 5–8 mm, rounded abaxially, obtusely angled adaxially, glabrous, sutures densely uncinate-pubescent;

stipe 2–3.5 mm.

= 22.