Flora of North America species comparison

erect or ascending, unbranched or densely dichotomously branched.

cespitose, spreading, branched proximally, sparsely branched distally.

palmate;

stipules ovate or lanceolate, 1–3 cm, margins entire or toothed, apex usually acuminate, sometimes 2-fid;

petiole 3–15 cm;

petiolules 1–1.5 mm;

leaflets 3, blades broadly obovate, orbiculate, or rhombic-obovate, 0.8–4 × 0.7–3 cm, base broadly cuneate, veins obscure, thickened near leaflet margin, margins remotely dentate to densely serrulate-dentate, apex rounded or slightly retuse, surfaces glabrous or glabrate.

palmate;

stipules broadly obovate, 1–2 cm, fused at base, margins slightly lobed, apex acute;

petiole 2–6 cm;

petiolules 1–1.5 mm;

leaflets 3, blades ovate, obovate, or orbiculate, slightly overlapping, 1–2 × 0.7–2.3 cm, base truncate to rounded, veins prominent, margins sparsely dentate, apex rounded, emarginate, surfaces glabrous.

terminal or axillary, 10–30-flowered, subglobose or globose, 1–4 × 1–4 cm;

involucres broadly bowl-shaped, 4–15 mm, lobes 3–8, lanceolate, acuminate, undivided or 2- or 3-fid.

terminal, 20–30-flowered, globose, usually formed of 2 sessile heads, 2.5–5 × 2.5–5 cm;

involucres absent.

3–13 cm.

3–7 cm, surpassing subtending leaves.

straight, 1 mm;

bracteoles distinct or connate, broadly ovate, 1 mm.

erect, reflexed in proximalmost flowers, 1 mm;

bracteoles cuplike, 0.5 mm.

10–27 mm;

calyx campanulate, 3–8 mm, glabrous, veins 10, tube 1.5–2.5 mm, lobes 5–10, unequal, undivided or 3-fid, long-acuminate, orifice open;

corolla creamy white to yellow, pink to purple in age, keel petals rarely dark purple, 10–27 mm, banner broadly ovate, inflated in fruit, not distally twisted, 10–27 × 6–15 mm, apex rounded, erose.

15–21 mm;

calyx tubular-campanulate, 9–12 mm, pilose, veins 10, tube 4.5–6 mm, lobes subequal, abaxialmost longest, subulate, orifice open;

corolla deep pink or magenta, 20–23 mm, banner tubular for most their length, 18–22 × 5–7 mm, apex flared.

stipitate, linear, 7–8 mm.

ellipsoid, 4–5 mm.

3–8, gray, mottled, globose, 1.6–2 mm, reticulate.

1 or 2, yellow-mottled, mitten-shaped, 2–3 mm, smooth.

= 16.