Flora of North America species comparison

ascending or erect, usually striate, angled, 30–100 cm, densely uncinate-puberulent to -pubescent and sparsely glutinous-pilose.

erect or ascending, usually striate, 50–150 cm, usually glabrous, sometimes sparsely uncinate-pubescent or pilose.

trifoliolate;

stipules persistent, ovate, 7.5–14.5 mm;

petiole 40–90 mm;

leaflet blades narrowly ovate to ovate or broadly ovate, thick, leathery, apex acute, usually pale-blotched along midrib adaxially, surfaces uncinate-puberulent to -pubescent and villous;

terminal blade 40–120 × 20–66 mm, length 2 times width.

trifoliolate;

stipules usually persistent, narrowly ovate or subulate, 10–20 mm;

petiole 40–70 mm;

leaflet blades ovate to broadly ovate, apex sharply acuminate to shortly cuspidate, surfaces glabrous (except veins spreading-villosulous);

terminal blade 50–120 × 30–70 mm, length 1.5–3 times width.

branched or unbranched;

rachis densely uncinate-puberulent to -pubescent and glutinous-villous;

primary bracts ovate to broadly ovate, 7–10 mm.

branched;

rachis densely uncinate-pubescent to rarely glabrescent;

primary bracts conspicuously covering apex of inflorescences, narrowly ovate, 8–14 mm.

8–25 mm, patent uncinate-pubescent and pilose.

4–8 mm, densely patent uncinate-puberulent and sparsely pilose.

calyx 3–5 mm, puberulent and pubescent, ± glutinous, tube 1.2–1.5 mm;

abaxial lobes 2.5–4 mm, lateral lobes 1.5 mm;

corolla white, 7–8 mm.

calyx 3–4 mm, glabrate, margins sparsely ciliate, lobes pilose, tube 1.5–2 mm;

abaxial lobes 3–4 mm, lateral lobes 2–3 mm;

corolla purple, 8–12 mm.

sutures nearly equally crenate;

connections adaxial, 1/4 as broad as segments;

segments (2 or)3–5(or 6), subrhombic, 6–8 × 4 mm, obtusely angled abaxially, somewhat angled adaxially, densely uncinate-pubescent throughout;

stipe 2–4 mm.

sutures dentate abaxially, sinuate adaxially;

connections adaxial, 1/2 as broad as segments;

segments (1–)4–7, obliquely narrow-rhombic or suborbiculate, (7–)9–11 × 4–5 mm, angled abaxially, slightly convex adaxially, sparsely uncinate-puberulent, sutures densely uncinate-puberulent;

stipe 1–2.5 mm.