Flora of North America species comparison

erect, 50–200 cm, medially uncinate-pubescent and patent-villous.

prostrate, decumbent, or trailing, branched from base, 25–70 cm, uncinate-puberulent to -pubescent.

trifoliolate;

stipules persistent, often patent or reflexed, obliquely ovate and apex acuminate or narrowly ovate and apex aristate, 3–12.5 mm, base amplexicaul;

petiole 8–50 mm;

leaflet blades narrowly ovate to ovate, elliptic, or rhombic, apex obtuse or acute, surfaces obscurely prominently reticulate-veined abaxially, uncinate-puberulent and strigose or subappressed-villous;

terminal blade (20–)40–150 × 10–50 mm, length 2–3 times width.

usually trifoliolate, rarely unifoliolate proximally;

stipules persistent, reflexed, narrowly deltate, 3–5.5 mm;

petiole 12–20 mm;

leaflet blades pale green abaxially, broadly ovate to suborbiculate, apex obtuse, surfaces clearly reticulate-veined abaxially, prominently reticulate-veined adaxially, loosely strigulose or glabrescent abaxially, appressed, bulbous-pilose adaxially;

terminal blade 20–45 × 15–25 mm, length 1.2–1.7 times width.

branched or unbranched;

rachis villous (often with bulbous hairs) and uncinate-puberulent, or only uncinate-puberulent;

primary bracts caducous, narrowly ovate, 4 mm.

terminal and unbranched;

rachis densely patent uncinate-pubescent and often bulbous-pilose;

primary bracts ovate, 4.5–6.5 mm.

10–15 mm.

10–15 mm.

calyx 1.5–3 mm, uncinate-puberulent, tube to 1 mm;

abaxial lobes 2 mm, lateral lobes 1 mm;

corolla lavender, 4–6 mm.

calyx 5–6 mm, pubescent, tube 1 mm;

abaxial lobes 4–5 mm, lateral lobes 3–4 mm;

corolla pink, lilac to purple, or greenish white, 7–8 mm.

margins alternately involute and revolute, sutures equally crenate, twisted conspicuously when young;

connections central, 1/4 as broad as segments;

segments (3 or)4–7, orbiculate, broadly elliptic, or rhombic, 3–4.5 × 3–3.5 mm, rounded abaxially and adaxially, densely uncinate-pubescent;

stipe 0.5–1 mm.

sutures crenate abaxially, strongly crenate adaxially;

connections adaxial, 1/3 as broad as segments;

segments (2 or)3–6, elliptic to suborbiculate, 4.5–8 × 3–5 mm, symmetrically rounded abaxially, convex adaxially, densely uncinate-pubescent throughout;

stipe 3–3.5 mm.

= 22.

= 22.