Flora of North America species comparison

erect, branched.

erect, unbranched or branched distally.

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 adnate entire length of petiole, sheathing, lanceolate-oblong, 0.8–1.3 cm, margins sharply and finely serrate, pilose, apex acute;

petiole 0.5–0.7 cm;

petiolules 0.5 mm;

leaflets (3–)5(–9), blades elliptic to linear-elliptic, 1–4 × 0.3–1.4 cm, base cuneate, veins prominent, cartilagenous, ending in sharp, curved teeth, margins setaceous, apex acute to obtuse, surfaces glabrous except midrib abaxially.

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 or axillary, 10–30-flowered, hemispheric or globose, 1.7–2.3 × 2.7–3.3 cm;

involucres oblique, to 0.5 mm, wavy to toothed.

2.5–12 cm.

1–5 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

erect or horizontal, 1–3 mm;

bracteoles broadly shell-shaped, sometimes connate into lobed ridge, 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.

11–17 mm;

calyx campanulate, oblique, 6–9 mm, glabrous or sparsely hairy distally and along veins, veins 10, tube 3 mm, lobes subequal, pilose, abaxial slightly longer, subulate, orifice open;

corolla white to rose-purple, 10–15 mm, banner rolled into open tube, arched upwards distally, 10–15 × 4–5 mm, apex broadly rounded or acute, apiculate.

short-stipitate, ovoid, 5–10 mm.

oblong, 6–8 mm.

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

3–6, dark brown or gray-brown, globose-reniform, 1.5–2 mm, slightly roughened, dull.

= 16.

= 16, 32, 40, 48.