Flora of North America species comparison

prostrate, densely branched, 20–80 cm, ascending-pilose or strigose.

ascending to erect, branched or unbranched, 50–100 cm, medially uncinate-pubescent, sometimes also ± pilose.

trifoliolate;

stipules persistent, narrowly ovate, 3–5 mm;

petiole 3–7.5 mm;

leaflet blades broadly obovate or cuneate-obovate, often folding downwards, apex emarginate, surfaces usually sparsely uncinate-puberulent or subappressed-pilose along midrib abaxially, rarely entire surface, glabrous adaxially;

terminal blade 5–10 × 3–11 mm, length 0.8–1.2 times width.

trifoliolate;

stipules persistent, ovate, 8–15 mm, base amplexicaul, pilose-ciliate;

petiole 30–50 mm;

leaflet blades narrowly ovate to ovate, thick, papery, apex acute to rounded, surfaces conspicuously reticulate-veined abaxially, uncinate-puberulent on veins abaxially, sparsely spreading-villous or glabrous adaxially;

terminal blade 35–80 × 30–70 mm, length 1.5–3 times width.

terminal fascicles opposite distal leaf, appearing axillary, unbranched;

rachis pubescent;

primary bracts narrowly ovate, 4 mm.

usually unbranched;

rachis patent-pilose and uncinate-puberulent;

primary bracts narrowly ovate, 4–5 mm.

8–12 mm.

7–15(–23) mm.

calyx 2.5–3 mm, appressed-pubescent, tube 1.2 mm;

abaxial lobes 1.5–1.7 mm, lateral lobes 1.5–1.7 mm, adaxial lobes deeply 2-toothed;

corolla pale pink to purplish, 4–5 mm, keel distinctly longer than wings.

calyx 4–5 mm, uncinate-puberulent and pilose, tube 2–3 mm;

abaxial lobes 2.5 mm, lateral lobes 2 mm;

corolla purplish, 6–8 mm.

sutures weakly crenate abaxially, with broad connection between segments, barely sinuate adaxially;

connections 2/3–4/5 as broad as segments;

segments 3–5, nearly square, 2.5–3.5 × 2.5–3 mm, symmetrically convex abaxially, slightly concave adaxially, inconspicuously uncinate-pubescent or glabrescent;

stipe 0 mm.

sutures equally crenate;

connections central, 1/2–4/5 as broad as segments;

segments 4–7, elliptic or suborbiculate, 4–7 × 3.5–5 mm, symmetrically convex abaxially and adaxially, densely uncinate-puberulent and villous;

stipe 2–4 mm.

= 22.