Flora of North America species comparison

± erect, loosely cespitose, branched.

erect, unbranched or sparsely 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, 1–2 cm, margins wavy or toothed, apex blunt or ± tapering distally;

petiole 1–8 cm;

petiolules 1 mm;

leaflets 3, blades broadly ovate, 1–3 × 1–1.5 cm, base cuneate, veins fine, margins denticulate, apex emarginate or retuse, surfaces with spreading, pustulate-based hairs.

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, 25–100-flowered, oblong, 2–7 × 1–2.5 cm;

involucres absent.

2–13 cm, slightly twisted apically.

2–10 cm.

strongly reflexed in fruit, 0.5 mm;

bracteoles minute, lanceolate.

straight, 0.5 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.

10–15 mm;

calyx tubular-campanulate, 10 mm, villous, veins 10, tube 3–4 mm, lobes equal, longer than tube, spreading in fruit, orifice narrowly opening;

corolla usually scarlet to red, rarely pink or white, 11–17 mm, banner oblong-elliptic, much longer than wing and keel petals, 10–16 × 2 mm, apex acute.

obliquely ellipsoid, 5 mm.

ovoid, leathery distally, transversely dehiscent, 2.5–3 mm.

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

1, reddish, ellipsoid, 2–2.5 mm, smooth, glossy.

= 16.

= 14.