Flora of North America species comparison

erect or ascending, to 300 cm, pubescent or glabrescent.

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

trifoliolate;

stipules usually persistent, narrowly ovate-deltate, 5–10 mm;

petiole usually 15–20 mm;

leaflet blades elliptic to ovate, apex obtuse or acute, surfaces finely spreading-villosulous to substrigose abaxially, uncinate-puberulent or glabrescent adaxially;

terminal blade 20–90 × 15–45 mm, length 1.5–4 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.

unbranched;

rachis densely patent uncinate-pubescent;

primary bracts caducous, narrowly ovate, 6–7 mm.

panicles, often relatively large, usually branched;

rachis densely uncinate-pubescent and long-pilose;

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

persistent with calyx-remnant at top after loments drop, 5–9 mm.

3–8 mm.

calyx 2–3.5 mm, uncinate-puberulent, lobes pilose, tube 1 mm;

abaxial lobes 1.5–2.5 mm, lateral lobes 1–2 mm;

corolla purple, 5–8 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.

sutures symmetrically crenate abaxially, straight or slightly sinuate adaxially;

connections central, 1/2–2/3 as broad as segments;

segments 4–8, semiobovate, 3.5–5 × 2.5–3 mm, broadly rounded abaxially, straight or barely convex adaxially, uncinate-puberulent;

stipe 1.5–2 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.

= 22.