Flora of North America species comparison

± erect, loosely cespitose, branched.

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

basal and cauline, palmate;

stipules ovate-lanceolate, 0.5–2 cm, margins usually entire, sometimes lobed, apex acute to acuminate;

petiole 0.5–12 cm;

petiolules 1 mm;

leaflets 3, blades lanceolate or elliptic, 0.5–2 × 0.3–1.3 cm, base cuneate, veins prominent, margins serrate, apex acute, apiculate, 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.

terminal or axillary, 15–30-flowered, ellipsoid or conic, 1.5–2 × 1–3 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

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.

2–13 cm, slightly twisted apically.

straight, thick, 5–25 cm.

strongly reflexed in fruit, 0.5 mm;

bracteoles minute, lanceolate.

strongly reflexed in fruit, 1–1.5 mm;

bracteoles minute.

12–14 mm;

calyx pink to purple, campanulate, 3–3.5 mm, glabrous, veins 10 (5 sometimes faint), tube 1.5–1.7 mm, lobes subequal, triangular-subulate, orifice open;

corolla pink to deep purple, 12–14 mm, banner oblong, 12–14 × 4–5 mm, apex rounded or retuse.

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.

obliquely ellipsoid, 5 mm.

oblong, 5 mm.

1 or 2, brown, often purple-mottled, flattened ovoid, 2–3 mm, smooth.

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

= 16.

= 48.