Flora of North America species comparison

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

ascending to erect, usually striate, usually unbranched, 40–100 cm, usually densely uncinate-puberulent to -pubescent and villous.

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, with 1 unifoliolate proximally, sometimes mostly clustered near base;

stipules persistent, some conspicuously reflexed, narrowly ovate, 4–10 mm;

petiole 15–35 mm;

leaflet blades rhombic or ovate, ± leathery, apex acute or obtuse, surfaces sparsely to densely spreading-villous abaxially, often glaucous, conspicuously reticulate-veined, lateral veins conspicuous, arcuate along margin, sparsely uncinate-puberulent adaxially, more densely so on thick veins;

terminal blade (30–)60–120 × 20–70 mm, length 1.3–2.5 times width.

usually unbranched;

rachis densely patent uncinate-pubescent;

primary bracts broadly ovate, 4.5–7 mm.

panicles, often relatively large, usually branched;

rachis densely uncinate-pubescent and long-pilose;

primary bracts caducous, narrowly ovate, 2.5–3 mm.

5 mm.

3–8 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 mm, puberulent to pubescent, tube 1–1.5 mm;

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

corolla purple, 5–7 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, sinuate adaxially;

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

segments 2–5, obtusely rhombic or semiorbiculate, 4–8 × 4–5 mm, obtusely angled abaxially, convex adaxially, uncinate-pubescent throughout;

stipe 1–4 mm.