Flora of North America species comparison

erect, branched.

erect or ascending, cespitose, much-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 oblanceolate, 0.5–1.4 cm, margins entire, apex acute-acuminate;

petiole 0.5–4 cm;

petiolules to 0.1 mm;

leaflets 3, blades oblanceolate, often folded, 0.4–1.5 × 0.2–0.4 cm, base cuneate, veins obscure, margins subentire to denticulate distally, apex acute, mucronulate, surfaces villous.

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.

terminal, usually formed of 2 sessile heads, 15–25-flowered, globose, 0.8–2 × 0.6–1.5 cm;

involucres absent, distal stipules and leaves sometimes forming involucrelike structure.

2.5–12 cm.

between distal leaves or involucrelike structure and inflorescences 0.5–6 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

straight, (0–)1–2 mm;

bracteoles broadly ovate, truncate, membranous, to 0.5 mm.

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.

10–15 mm;

calyx tubular-campanulate, 6–9 mm, rough-hairy or glabrous, veins 10, tube 3–6 mm, lobes subequal, subulate, orifice open;

corolla light purple, 10–15 mm, banner oblong, 9–13 × 3–4 mm, apex rounded or truncate;

ovaries pubescent distally.

short-stipitate, ovoid, 5–10 mm.

ellipsoid, 4–5 mm.

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

1 or 2, brown, ovoid, 1.5–2 mm, smooth.

= 16.