Flora of North America species comparison

erect, branched.

erect, branched.

palmate;

stipules ovate-lanceolate, 1–1.5 cm, margins entire, sometimes ciliate, apex acuminate;

petiole 1–13 cm;

petiolules 0.5 mm;

leaflets 3, blades elliptic to oblong or obovate, 0.8–3.5 × 0.5–1.5 cm, base cuneate, veins thickened, margins serrate proximally, obscurely denticulate distally, apex usually rounded or retuse, rarely acute, surfaces glabrous.

palmate;

stipules ovate, 0.5–1.5 cm, margins toothed or lacerate, apex acute-acuminate;

petiole 1–15 cm;

petiolules 1 mm;

leaflets 3, blades elliptic, oblanceolate, or obovate, 2–2.5 × 1–1.5 cm, base cuneate, veins fine, margins dentate-serrate to crenulate, teeth shortly aristate, apex obtuse or broadly acute, surfaces pubescent or glabrate.

axillary or terminal, 10–30-flowered, ovoid to subglobose, 0.7–2.2 × 0.5–2 cm;

involucres a narrow rim, 0.5 mm, membranous, dentate.

axillary or terminal, 5–30-flowered, subglobose or globose, 1.8–3 × 2–3 cm;

involucres bowl-shaped, 10–25 mm, lobes 6–16, sharply setaceous-toothed, sinuses shallow.

2.5–12 cm.

2–15 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

straight, 0.5 mm;

bracteoles absent.

6–13 mm;

calyx broadly campanulate, 5–11 mm, glabrous, veins 10, tube 1–5 mm, lobes unequal, elliptic to linear, margins hyaline, dentate or pectinate, ciliate, sinuses narrow, orifice open;

corolla white, pink, or purple, 5–13 mm, banner broadly ovate, 6–13 × 4–7 mm, apex rounded, apiculate.

10–17 mm;

calyx campanulate, 6–13 mm, pubescent, veins 5, tube 3–5 mm, lobes unequal, setaceous, abaxial inconspicuously 2- or 3-fid, adaxial unbranched, segments plumose, orifice open;

corolla usually lavender or purple, sometimes purple with white tips, 8–16 mm, banner oblong, proximally inflated in fruit, distally narrowed into twisted tip, 3–5 × 10–13 mm, apex obtuse, truncate, or emarginate.

short-stipitate, ovoid, 5–10 mm.

stipitate, ovoid-ellipsoid, 2.5–4 mm.

1 or 2, brown, mottled, ovoid, 2.5–3 mm, smooth.

1 or 2, pale brown, mottled, ellipsoid to mitten-shaped, 1.6–2 mm, rugose.

= 16.