Flora of North America species comparison

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

stiffly erect or ascending, branched at base and appearing clustered, 40–80 cm, glabrescent or sparsely uncinate-puberulent.

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.

unifoliolate;

stipules caducous, narrowly ovate, 3–9 mm;

petiole 10–30 mm;

leaflet blades linear, (40–)70–130 × 2–5 mm, length 10+ times width, apex acute or acuminate, surfaces uncinate-puberulent and sparsely strigose on veins abaxially, uncinate-puberulent adaxially.

usually unbranched;

rachis sparsely patent uncinate-puberulent;

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

branched or unbranched;

rachis sparsely uncinate-puberulent;

primary bracts ovate, 2–3 mm.

15–20(–25) mm.

10–20 mm, uncinate-puberulent or glabrescent.

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.

calyx 2 mm, puberulent and uncinate-puberulent, tube 0.8 mm;

abaxial lobes 1.2 mm, lateral lobes 1 mm;

corolla ephemeral, purple, 3 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.

margins slightly involute, sutures equally crenate;

connections central, 1/4 as broad as segments;

segments 3–6, broadly elliptic, (2–)3–3.5 × 2.5–3 mm, convex or rounded abaxially and adaxially, sparsely uncinate-puberulent, sutures moderately uncinate-puberulent;

stipe to 1 mm.