Flora of North America species comparison

erect or ascending, usually striate, sparsely branched, 20–80 cm, pubescent.

ascending to erect, usually striate, branched or unbranched, 30–150 cm, glabrous or sparsely to densely uncinate-puberulent, sometimes also patent long-pilose.

trifoliolate;

stipules caducous, narrowly ovate, 6–8 mm;

petiole 1–5 mm;

leaflet blades narrowly oblong-elliptic to linear, apex acute, surfaces villosulous;

terminal blade 40–60 × 4–10 mm, length 3.5–10 times width.

trifoliolate;

stipules caducous or moderately persistent, subulate to narrowly ovate, 2–5 mm;

petiole 1–30 mm;

leaflet blades narrowly ovate, elliptic, elliptic-ovate, ovate-rhombic, or suborbiculate, apex obtuse or acute, mucronulate, surfaces sparsely to densely uncinate-puberulent and appressed-villous abaxially, uncinate-puberulent or glabrescent adaxially;

terminal blade 9–75 × 6–33 mm, length 1.5–4(–5) times width.

usually unbranched;

rachis uncinate-puberulent;

primary bracts caducous, broadly ovate, 4.5–5.5 mm.

terminal and branched, axillary and unbranched;

rachis uncinate-puberulent;

primary bracts ovate, 1.5–3 mm.

8–15 mm.

3–19 mm, uncinate-puberulent.

calyx 3 mm, uncinate-puberulent, lobes pubescent, tube 1.2 mm;

abaxial lobes 2 mm, lateral lobes 1.5 mm;

corolla blue-purple, 5–6 mm.

calyx 1.5–2.5 mm, pubescent (not uncinate-puberulent), tube 1 mm;

abaxial lobes 1.2–1.5 mm, lateral lobes 1 mm;

corolla usually lavender to red-violet or pink-purple, rarely white, 4–6 mm.

sutures undulate abaxially, crenate adaxially;

connections adaxial, 1/3 as broad as segments;

segments (2 or)3–5, semiorbiculate, 4–5(–6) × 4 mm, rounded abaxially, convex adaxially, uncinate-puberulent;

stipe 1–2 mm.

sutures crenate abaxially, sinuate adaxially;

connections adaxial, 1/4–1/2 as broad as segments;

segments 1–4, broadly elliptic, 3.5–5.5 × 2.5–4 mm, rounded abaxially, convex adaxially, uncinate-puberulent throughout;

stipe 1–2 mm.

= 22.

= 22.