Flora of North America species comparison

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

erect or ascending, usually striate, 30–100(–150) cm, glabrous or sparsely to densely uncinate-puberulent or conspicuously pilose 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;

stipules caducous, subulate to narrowly ovate-deltate, 2–6 mm;

petiole (10–)20–50 mm;

leaflet blades polymorphic, linear, narrowly ovate, narrowly ovate-oblong, ovate, broadly ovate to subrounded, or rhombic, usually thin, rarely thick, papery, apex acute to obtuse, surfaces closely to subdensely appressed pilose, inconspicuously reticulate-veined abaxially, sparsely appressed-puberulent and pilose adaxially;

terminal blade 20–100 × 8–65 mm, length 1–8 times width.

paniclelike, branched;

rachis densely patent bulbous-villous and uncinate-puberulent;

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

terminal panicles and axillary racemes, branched, very diffuse;

rachis moderately to densely uncinate-puberulent to -pubescent;

primary bracts narrowly ovate, 1–3.5 mm.

persistent, 8–13 mm.

(3–)6–12(–20) 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, pubescent, tube 1–1.5 mm;

abaxial lobes 2 mm, lateral lobes 1 mm;

corolla lilac to purple, 6–9 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.

sutures deeply crenate or dentate abaxially, sinuate adaxially;

connections adaxial, 1/5–1/3 as broad as segments;

segments (2 or)3–5, deltate to rhombic, (4–)5–10 × 3–5 mm, angled abaxially (sometimes obtusely), convex adaxially, uncinate-puberulent to -pubescent;

stipe 1–7 mm.

= 22.

= 22.