Flora of North America species comparison

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

ascending to erect or sprawling, usually striate, branched, 60–150 cm, sparsely to densely appressed-pilose and sparsely 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.

trifoliolate;

stipules caducous, narrowly ovate-deltate, 3–4 mm;

petioles 20–40 mm proximally, 8–20 mm distally;

leaflet blades narrowly elliptic-oblong, apex obtuse, lateral veins prominent, reaching margin, margin flat, surfaces subappressed-villous abaxially, glabrescent adaxially;

terminal blade 25–70 × 15–25 mm, length 2–3 times width.

usually unbranched, sometimes branched;

rachis patent uncinate-puberulent;

primary bracts narrowly ovate, 2.5–3 mm.

branched or unbranched and elongate when terminal, or unbranched from distal axils;

rachis closely appressed-pubescent and patent uncinate-puberulent;

primary bracts caducous, narrowly ovate, 3–5 mm.

8–15 mm.

8–10 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 4 mm, densely uncinate-puberulent, tube 2 mm;

abaxial lobes 2 mm, lateral lobes 1 mm;

corolla purple, 8–11 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 crenate;

connections central, 1/3 as broad as segments;

segments 3–8, semiorbiculate, 5–7 × 4–5 mm, rounded abaxially, convex adaxially, villosulous or pubescent and uncinate-puberulent throughout;

stipe 2–5 mm.