Flora of North America species comparison

± erect, loosely cespitose, branched.

erect or ascending, branched.

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 ovate, 1–1.5 cm, sheathing, margins deeply lacerate, apex acuminate;

petiole 1.5–10 cm;

petiolules to 0.5 mm;

leaflets 3, blades elliptic, lanceolate, oblanceolate, rhombic, or obovate, 1.5–4 × 0.3–1.7 cm, base cuneate, veins thickened, margins coarsely spinulose-serrate, apex acute, mucronate, surfaces glandular.

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.

axillary or terminal, 10–50-flowered, globose or ovoid, 1–3.5 × 1–3 cm;

involucres flattened or bowl-shaped, 3–8 mm, when folded, not hiding flowers except proximally, incised 1/4–1/3 their length.

2–13 cm, slightly twisted apically.

3–15 cm, glandular.

strongly reflexed in fruit, 0.5 mm;

bracteoles minute, lanceolate.

erect, 1 mm;

bracteoles absent.

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.

13–20 mm;

calyx tubular-campanulate, slit between adaxial lobes, 10–13 mm, glandular, veins 20+, tube 5–7 mm, lobes unequal, narrowly triangular or lanceolate-subulate, usually entire, rarely 3-fid or shouldered below apex, orifice open;

corolla white or pale pinkish with dark purple spot, 10–18 mm, banner broadly elliptic, 10–18 × 2–4 mm, apex blunt.

obliquely ellipsoid, 5 mm.

obovoid, 3.5–4 mm.

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

1 or 2, brown, mottled, ellipsoid or mitten-shaped, 2.5 mm, smooth.

= 16.

= 16.