Flora of North America species comparison

erect, branched.

erect to decumbent, branched.

palmate;

stipules ovate to lanceolate, 0.8–1.5 cm, margins entire or slightly serrate, apex acicular;

petiole 1–7 cm;

petiolules to 0.5 mm;

leaflets 3, blades narrowly obcordate, obovate, oblanceolate, or linear, 1–2.5 × 0.3–0.7 cm, base cuneate, veins moderately thickened, margins serrate distally or entire, apex rounded, truncate, shallowly to deeply retuse, or deeply 2-fid, surfaces glabrous or hairy abaxially along midvein.

palmate;

stipules oblong, 0.5–1.9 cm, margins entire, apex lanceolate-subulate;

petiole 0.3–5 cm;

petiolules 1 mm;

leaflets 3, blades ovate to obovate, 0.5–1.5 × 0.3–2 cm, base cuneate, veins fine, margins denticulate to dentate, apex rounded, truncate, or emarginate, surfaces hirsute.

axillary or terminal, 5–30-flowered, globose to subglobose, 0.8–1.5 × 0.8–1.5 cm, rachis prolonged beyond flowers;

involucres a very narrow rim, to 0.5 mm.

terminal, 40–60-flowered, globose or ovoid, burlike, not disarticulating at maturity, 1–1.4 × 1.8–2 cm;

involucres absent.

3–8 cm.

0.1–0.7 cm.

reflexed in fruit, 1–3 mm;

bracteoles broadly triangular, membranous, to 0.5 mm.

straight, 0.5 mm;

bracteoles absent.

6–8 mm;

calyx campanulate, 3–3.6 mm, slightly hairy or glabrous, veins 10, tube 1–1.5 mm, lobes unequal, subulate, margins green or purple, orifice open;

corolla pink or purple, 5–7 mm, banner elliptic to oblong, 5–7 × 3–4 mm, apex rounded, apiculate.

7–9 mm;

calyx campanulate, 7–9 mm, glabrous, veins 20, tube 3 mm, lobes equal, longer than tube, setaceous becoming spinose, orifice hairy, open;

corolla pinkish white, 6–10 mm, banner elliptic, 6–9 × 1.5–2 mm, apex emarginate.

stipitate, obovoid, 3–4 mm.

ovoid, leathery distally, transversely dehiscent, 1.5 mm, long-beaked.

1 or 2, brown, mottled, oblong, 2–3 mm, smooth.

1, light brown, reddish, or yellow with reddish spots, ovoid, 1 mm, smooth, shiny.

= 16.

= 16.