Flora of North America species comparison

erect, ascending, or procumbent, usually striate, 30–60(–100) cm, sparsely to densely pilose and uncinate-pubescent.

decumbent or decumbent-assurgent, branched, 30–120 cm, densely uncinate-pubescent.

trifoliolate, sometimes unifoliolate proximally;

stipules persistent, recurved, subulate, 2–3 mm;

petiole 7–25 mm;

leaflet blades usually oblong-ovate to narrowly so, sometimes broadly elliptic to oblong, apex obtuse or acute, surfaces sparsely uncinate-puberulent;

terminal blade 10–30(–35) × 8–10 mm, length 1–3.5 times width.

tri-foliolate;

stipules caducous, narrowly ovate, 5+ mm;

petiole 20–30 mm;

leaflet blades ovate-elliptic to narrowly so, apex acute to obtuse, surfaces densely appressed-pubescent abaxially, sparsely so adaxially;

terminal blade (20–)35–60 × 8–10(–15) mm, length 2.5–4 times width.

usually unbranched, sometimes branched;

rachis patent uncinate-puberulent;

primary bracts narrowly ovate, 2.5–3 mm.

axillary and terminal, branched or unbranched;

rachis patent uncinate-puberulent to pubescent;

primary bracts closely imbricate before anthesis, caducous, ovate, 5 mm.

8–15 mm.

5–10 mm.

calyx 1.5–2.5 mm, pubescent, tube 1 mm;

abaxial lobes 1.5 mm, lateral lobes 1 mm;

corolla pink-purple, 4–5 mm.

calyx 3–4 mm, sparsely pubescent, tube 1 mm;

abaxial lobes 3 mm, lateral lobes 2 mm;

corolla pink or purple to blue, 7–9 mm.

sutures subequally crenate;

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

segments 2–7, rounded or broadly elliptic, 2.5–3 × 2.5 mm, abaxially and adaxially rounded, glabrous or slightly puberulent;

stipe 1–2 mm.

sutures undulate abaxially, sinuate adaxially;

connections adaxial, 1/4–1/3 as broad as segments;

segments 4–7, semiorbiculate, 3–5 × 3–3.5 mm, rounded abaxially, slightly convex adaxially, glabrous or sparsely uncinate-puberulent throughout;

stipe 1–2 mm.