Flora of North America species comparison

erect, branched.

erect or ascending, unbranched or several stems clumped from crown.

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 narrowly ovate, lanceolate, or linear-lanceolate, 1–2 cm, margins entire or toothed, apex acute;

petiole 0.5–20 cm;

petiolules 1 mm;

leaflets 3, blades usually rhombic, oblong, or elliptic, sometimes ovate, 2.5–5 × 0.6–2 cm, base cuneate, veins slightly thickened, margins setose-serrulate, apex obtuse or retuse, surfaces glaucous abaxially, glabrous.

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, 30–70+-flowered, globose or ovoid becoming subglobose, 1.5–4 × 1.8–3.3 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

2.5–12 cm.

straight, thick, 5–25 cm.

erect becoming reflexed, 0.5–6 mm;

bracteoles linear or cup-shaped, to 1 mm.

strongly reflexed in fruit, 1–1.5 mm;

bracteoles minute.

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.

11–14 mm, sweetly fragrant;

calyx campanulate, gibbous, 4–6 mm, glabrous, veins 5, tube 2–3 mm, lobes unequal, narrowly triangular or subulate, orifice open;

corolla light purplish, sometimes with pink tips, 10–13 mm, banner straight, obovate to broadly elliptic, 13–18 × 6–8 mm, apex rounded or retuse, apiculate.

short-stipitate, ovoid, 5–10 mm.

oblong, 5 mm.

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

2–4, reddish brown, flattened globose, 1.5–2 mm, smooth.

= 16.

= 48.