Flora of North America species comparison

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

ascending to erect, usually striate, mostly unbranched, 50–100(–150) cm, medially uncinate-puberulent and uncinate-pubescent.

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 moderately persistent, narrowly ovate, 4–9.5 mm, apex often awn-tipped;

petiole 1–5 mm;

leaflet blades narrowly elliptic to linear, apex obtuse or acute, surfaces prominently reticulate-veined abaxially, uncinate-puberulent and subappressed pubescent abaxially, glabrate or sparsely pubescent adaxially;

terminal blade (30–)40–85 × 5–15 mm, length 4–10 times width.

branched or unbranched;

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

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

terminal and branched;

rachis terete to subangulate, densely uncinate-puberulent and sparsely pilose;

primary bracts ovate, 2.5–3 mm.

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

2–5 mm.

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 2.5–3 mm, puberulent, tube 1.5 mm;

abaxial lobes ovate, 1.5 mm, lateral lobes ovate, 1 mm;

corolla pale lavender to reddish purple, 5 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 deeply crenate abaxially, sinuate adaxially;

connections adaxial, 1/3 as broad as segments;

segments (1 or)2(–4), semiorbiculate, 4.5–6 × 3–4.5 mm, symmetrically rounded abaxially, nearly straight or convex adaxially, densely uncinate-puberulent throughout;

stipe 1–3 mm.

= 22.