Flora of North America species comparison

± erect, loosely cespitose, branched.

decumbent, 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 broadly ovate, 1.3–1.7 cm, margins entire or faintly denticulate, apex acuminate;

petiole 7–17 cm (distalmost 6–8 cm);

petiolules 1–1.5 mm;

leaflets 3, blades ovate or orbiculate, 0.8–3.5 × 0.5–1.9 cm, base cuneate, veins fine, margins dentate to denticulate, apex rounded or obcordate, surfaces 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, 20–50-flowered, globose becoming subglobose or hemispheric, 1.2–2.5 × 1.8–2.7 cm;

involucres a narrow rim.

2–13 cm, slightly twisted apically.

2.2–2.5 cm.

strongly reflexed in fruit, 0.5 mm;

bracteoles minute, lanceolate.

reflexed in fruit, 5–7 mm;

bracteoles broadly ovate, membranous, to 0.5 mm, truncate.

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.

9–11 mm;

calyx campanulate, 3–5 mm, sparsely pubescent or glabrous, veins 10, tube 1–2 mm, lobes equal, narrowly triangular to subulate, 2–3.7 mm, orifice open;

corolla white, 9–10 mm, banner ovate-oblong, 9–10 × 6–8 mm, apex rounded or retuse.

obliquely ellipsoid, 5 mm.

oblong, 3–4 mm.

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

2–4, yellow to brown, purple-mottled, globose, 1.2–1.5 mm, slightly rugose.

= 16.