Flora of North America species comparison

prostrate, ascending, or erect, branched.

erect or ascending, loosely cespitose, sometimes rhizomatous, sparsely branched.

palmate;

stipules ovate or triangular-lanceolate, 0.4–1.2 cm, margins entire, apex acute or acuminate;

petiole 0.5–7 cm;

petiolules to 1 mm;

leaflets 3, blades obovate, obcordate, or elliptic, 0.4–1.5 × 0.3–1 cm, base cuneate, veins moderately prominent, margins denticulate, apex rounded or emarginate, surfaces sparsely hairy abaxially, glabrous adaxially.

palmate;

stipules oblong, 0.5–2 cm, margins entire, apex acute to short-acuminate;

petiole 2–10 cm;

petiolules 0.5 mm;

leaflets 3, blades elliptic to obovate, 1–4.1 × 0.5–1.6 cm, base cuneate, veins fine, margins entire, serrulate, or dentate, apex usually acute or obtuse, rarely retuse or apiculate, surfaces glabrous.

axillary, 10–20-flowered, subglobose, soon becoming globose, flowers resupinate, calyces densely white-woolly, compacted, inflated, 0.5–1.5 × 0.5–1.5 cm;

involucres a narrow rim, 0.2 mm.

terminal, 15–20-flowered, globose, ovoid, or ellipsoid, 1.4–3.7 × 1.8–3 cm;

involucres formed of distinct or connate bracteoles, apex acute or obtuse.

0.5–1.5 cm.

2.5–15 cm.

slightly reflexed, to 0.5 mm;

bracteoles cup-shaped, membranous, 0.2 mm.

erect, reflexed slightly, or only those of proximal flowers reflexed, 1 mm;

bracteoles purplish, oblong, 3–6 mm, scarious.

3–7 mm;

calyx tubular, inflated in fruit, markedly asymmetric-bilabiate, 2–6 mm, woolly adaxially, veins 5–10, connected by lateral veins, tube 1.5–2.5 mm, 4–5 mm in fruit, lobes unequal, subulate, shorter than tube, adaxial spreading or curved, orifice open, abruptly constricted in fruit;

corolla pink, 3–6 mm, banner ovate, 3–6 × 3–6 mm, apex emarginate to crenulate.

12–22 mm;

calyx campanulate, slightly gibbous, 6–9 mm, glabrous, veins 10, tube 3–4 mm, lobes unequal, subulate to narrowly triangular, orifice open;

corolla pale purplish violet, keel petals darker purple, 10–22 mm, banner broadly elliptic or obovate, 10–22 × 8–10 mm, apex rounded, acute, or retuse.

ovoid to globose, 2–3 mm.

stipitate, oblong, 6–7 mm.

1 or 2, yellow to brown, mottled, mitten-shaped, 0.9–1.1 mm, smooth, glossy.

1–4, tan or brown, mitten-shaped, 1.5–2 mm, smooth, dull.

= 16.