Flora of North America species comparison

erect or ascending, unbranched or densely dichotomously branched.

erect, unbranched or sparsely branched.

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 lanceolate to ovate, 1.5–6.5 cm, margins setose-serrulate or entire, apex acuminate;

petiole 1.5–15 cm;

petiolules 1 mm;

leaflets 3, blades elliptic-oblanceolate to linear-elliptic, 3–9.5 × 0.5–1.6 cm, base cuneate, lateral veins prominent, recurved, dichotomously forked near margin, margins setose-denticulate to serrate, apex rounded or acute, surfaces glaucous, glabrous, sometimes sparsely pubescent abaxially.

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 or axillary, 30–50+-flowered, umbellate, globose to ovoid, 1.5–5 × 2–3.5 cm;

involucres absent.

3–13 cm.

3–12 cm.

straight, 1 mm;

bracteoles distinct or connate, broadly ovate, 1 mm.

erect or slightly reflexed, to 0.2 mm;

bracteoles minute.

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.

14–16 mm;

calyx campanulate, 6–9 mm, pilose, veins 15–20, tube 1.5–3 mm, lobes unequal, narrow, triangular or subulate, abaxial lobe straight, lateral and adaxial tortuous, recurved inwards around corolla, orifice open;

corolla magenta, 12–16 mm, banner oblong, 12–16 × 4–6 mm, apex flared, acute or obtuse;

ovaries glabrous or pubescent distally.

stipitate, linear, 7–8 mm.

ovoid, 3–4.5 mm.

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

1 or 2, tan to brown, ovoid, 1–1.5 mm, slightly roughened.

= 16.

= 16.