Flora of North America species comparison

prostrate, ascending, or erect, branched.

erect-ascending, flexuous, often zigzag, 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 lanceolate-linear, 1.8–2.8 cm, margins entire, ciliate, apex subulate;

petiole 1–9 cm;

petiolules 1 mm;

leaflets 3, blades elliptic-oblong, obovate, or ovate, 1.5–5 × 0.8–3.5 cm, base cuneate, veins arcuate, forked, margins entire, finely ciliate, apex obtuse to acute, surfaces appressed-pubescent.

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 or axillary, rarely paired, 20–50-flowered, globose or ovoid, 1.5–4 × 1.3–3.8 cm;

involucres absent.

0.5–1.5 cm.

1–3 cm.

slightly reflexed, to 0.5 mm;

bracteoles cup-shaped, membranous, 0.2 mm.

straight, 0.5 mm;

bracteoles absent.

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.

15–18 mm;

calyx cylindric, 6–10 mm, glabrous, veins 10–15, tube 2.5–3.5 mm, lobes unequal, subulate-setaceous, orifice glabrous or hairy distally, closed;

corolla usually reddish purple, rarely white, 12–20 mm, banner lanceolate-elliptic, 1.2–2 × 4–5 mm, apex acute.

ovoid to globose, 2–3 mm.

ovoid to globose, leathery distally, transversely dehiscent, 2–3 mm.

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

1 or 2, yellow-brown, mitten-shaped, 1–1.5 mm, smooth, lustrous.

= 16.

= 48, 64, 68, 70, 72, 80, ca. 126.