Flora of North America species comparison

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

erect, 50–100 cm, sparsely to densely pilose or villous, usually patent uncinate-puberulent and -pubescent, sometimes glabrescent.

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, subulate to narrowly ovate, 4.5–9.5 mm;

petiole 10–60 mm;

leaflet blades often pale green abaxially, ovate to narrowly ovate, apex acute, surfaces slightly or visibly strigulose abaxially, sparsely puberulent or nearly glabrescent adaxially;

terminal blade 40–110 × 15–30 mm, length 2.5–3.5 times width.

terminal fascicles opposite distal leaf, appearing axillary, unbranched;

rachis pubescent;

primary bracts narrowly ovate, 4 mm.

terminal and branched, or unbranched from distal axils;

rachis villous and uncinate-pubescent, sometimes appearing glabrescent;

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

8–12 mm.

4–8 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 3.5–5 mm, densely uncinate-puberulent and sparsely pilose, tube 1–1.5 mm;

abaxial lobes 3–3.5 mm, lateral lobes 2 mm;

corolla usually blue-violet, rarely white, 8–11 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 crenate abaxially, repand or sinuate adaxially;

connections adaxial, 1/2 as broad as segments;

segments 3–5, semiorbiculate, 4–8 × 4–5 mm, rounded abaxially, convex adaxially, densely uncinate-puberulent;

stipe 2(–3) mm.

= 22.

= 22.