Flora of North America species comparison

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

erect or procumbent, usually striate, usually unbranched, sometimes branched, 10–40(–150) cm, uncinate-puberulent and sparsely pubescent or glabrescent.

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, usually unifoliolate proximally and/or distally;

stipules persistent, patent or deflexed, subulate to narrowly ovate-deltate, 1–7 mm;

petiole 10–35 mm;

leaflet blades polymorphic between proximal and/or distal ones and median ones in a single individual, linear, narrowly to broadly ovate, rhombic or transversely ovate, lateral leaflets nearly as large as terminal, apex acute to acuminate or obtuse, surfaces uncinate-puberulent and villous;

terminal blade 25–50 × 6–10 mm, length 0.8–10 times width; unifoliolate blades transversely elliptic or depressed ovate, 10 × 15–20 mm, or ovate or oblong to broadly ovate, 2–4 × 2–3 mm.

paniclelike, branched;

rachis densely patent bulbous-villous and uncinate-puberulent;

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

branched or unbranched;

rachis densely patent uncinate-puberulent;

primary bracts caducous or persistent, narrowly ovate, 1.5–5.5 mm.

persistent, 8–13 mm.

6–23 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 2–3 mm, scabrous, often glandular, tube 1 mm;

abaxial lobes 1.5–2 mm, lateral lobes 1.3–1.5 mm;

corolla ephemeral, pinkish or rose-violet, fading yellow-green or blue-green, 2.5–3.5 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, sutures subequally crenate, contorted or appearing spirally twisted when young;

connections central, 1/4–1/5 as broad as segments;

segments (1 or)2–5, rhombic, 2–4 × 2–3 mm, angled abaxially, sometimes rounded, obtusely angled adaxially, uncinate-puberulent throughout;

stipe 0.3–3.5 mm.

= 22.