Flora of North America species comparison

erect or ascending, usually striate, angled, 30–90 cm, densely uncinate-puberulent.

slender, procumbent or decumbent, 20–100 cm, densely patent uncinate-puberulent and/or inconspicuously pilose.

trifoliolate;

stipules caducous, linear-lanceolate, 1–4 mm;

petiole 3–13 mm;

leaflet blades somewhat paler abaxially, narrowly ovate-oblong, lateral slightly smaller than terminal, apex acute, lateral veins looped within margin, margins revolute, surfaces strigulose;

terminal blade 30–80 × 6–20 mm, length 3–5 times width.

trifoliolate;

stipules persistent, obliquely ovate, 2–3.5 mm, base auriculate, amplexicaul;

petiole 10–20 mm;

leaflet blades usually ovate to shortly elliptic, rarely narrowly elliptic, apex obtuse, surfaces appressed-pubescent;

terminal blade usually 10–35(–50) × 7–30 mm, length (1.5–)2–3 times width.

branched or unbranched;

rachis densely uncinate-puberulent;

primary bracts caducous, broadly deltate, 6 mm.

lax-flowered, terminal and axillary, usually unbranched;

rachis densely spreading-pubescent;

primary bracts caducous, narrowly ovate, 1.5–2 mm.

7–10 mm.

3–10 mm.

calyx 4 mm, glabrous, tube 1.5–2 mm;

abaxial lobes 2 mm, lateral lobes 1.5–2 mm;

corolla purple, 10–12 mm.

calyx 1.5–2.5 mm, pilose, tube 1 mm;

abaxial lobes 1.5 mm, lateral lobes 0.7–1 mm;

corolla lavender-pink or reddish purple, banner with yellow spots, 4–5 mm.

sutures ± deeply crenate abaxially, crenate adaxially;

connections slightly adaxial, 1/2 as broad as segments, sometimes contorted (twisted);

segments 2–5, elliptic, 5–6 × 3 mm, rounded abaxially, slightly rounded adaxially, uncinate-pubescent throughout;

stipe 1–2 mm.

turgid, straight or curved, linear;

sutures equally shallow-undulate;

connections central, 2/3–3/4 as broad as segments;

segments 5–10, narrowly oblong or narrowly elliptic, 4–5 × 1.5 mm, rugose, not reticulate, symmetrically convex abaxially and adaxially, densely uncinate-pubescent throughout;

stipe 1 mm.