Flora of North America species comparison

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

ascending or erect, usually striate, unbranched to inflorescence, 50–100 cm, uncinate-puberulent.

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.

trifoliolate;

stipules mostly persistent, linear to narrowly ovate-deltate, 2–5 mm;

petiole 6.5–18 mm;

leaflet blades linear to narrowly oblong, usually folded and appearing narrower, leathery, apex obtuse to acute, surfaces reticulate-veined adaxially, glabrous or sparsely puberulent abaxially, glabrous adaxially;

terminal blade 35–60(–80) × 4–7 mm, length 8–10 times width.

usually unbranched;

rachis densely patent uncinate-pubescent;

primary bracts broadly ovate, 4.5–7 mm.

branched or unbranched;

rachis densely uncinate-puberulent to pubescent;

primary bracts narrowly lanceolate-triangular, 1.4–2 mm.

5 mm.

5–13 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.

calyx 2.5–3.5 mm, uncinate-puberulent to pubescent on lobes, tube 1 mm;

abaxial lobes 2–2.5 mm, lateral lobes 1.5–2 mm;

corolla pink or purple, 4 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.

sutures deeply crenate abaxially, with narrow connection between segments, nearly straight adaxially, slightly sinuate at isthmus;

connections adaxial, 1/5 as broad as segments;

segments 1 or 2(or 3), semiorbiculate, 4.5–6 × 3–4 mm, symmetrically rounded abaxially, incipiently or plainly concave adaxially, densely uncinate-puberulent, more densely on sutures;

stipe 1.5 mm.

= 22.