Flora of North America species comparison

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

erect, usually striate, 10–50 cm, obscurely uncinate-puberulent or glabrescent.

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 persistent, patent, subulate or narrowly deltate (from broad base), 2–3 mm;

petiole 10–35 mm;

leaflet blades linear to narrowly oblong, apex obtuse, surfaces sparsely uncinate-puberulent;

terminal blade 20–70 × 2–5 mm, length 7+ times width.

usually unbranched;

rachis uncinate-puberulent;

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

usually unbranched;

rachis sparsely patent uncinate-puberulent;

primary bracts usually persistent, subulate, patent, 1.5–4 mm.

8–15 mm.

15–20(–25) mm.

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 mm, sparsely puberulent, tube 0.8–1 mm;

abaxial lobes 1 mm, lateral lobes 1 mm;

corolla pink or pink-purple, 3–3.5 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.

margins sometimes slightly involute, sutures equally crenate;

connections central, 1/5 as broad as segments;

segments 2–4, rounded, 3–3.5 × 3 mm, rounded abaxially and adaxially, inconspicuously reticulate, glabrous;

stipe 1–1.5 mm.

= 22.