Flora of North America species comparison

erect, branched.

erect or ascending, unbranched or 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 broadly ovate, 1–2.5 cm, margins entire or denticulate, apex acute or acuminate;

petiole 1–10 cm (distalmost 0.3–3.5 cm);

petiolules 0.5–1.5 mm;

leaflets 3, blades ovate, obovate, oblong, or rhombic, 1–4.5 × 0.7–2 cm, base cuneate, veins fine, margins dentate to denticulate, apex broadly acute, rounded, or emarginate, surfaces pubescent or glabrous.

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 or axillary, 10–50-flowered, globose to subglobose, 1.5–4 × 2–4 cm;

bracteoles forming shallow, membranous cups, to 0.5 mm.

3–8 cm.

2–8 cm.

reflexed in fruit, 1–3 mm;

bracteoles broadly triangular, membranous, to 0.5 mm.

reflexed in fruit, 5–12 mm;

bracteoles broad-obovate, membranous, 0.5–1 mm, truncate to 2-fid.

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.

10–15 mm;

calyx campanulate, 6–9 mm, pilose or glabrous, veins 10, tube 1–1.5 mm, lobes equal, narrowly triangular to subulate, 3–7 mm, margins green, sinuses broad, orifice open;

corolla usually pink, magenta, or creamy white, sometimes bicolored, 9–14 mm, banner obovate-oblong, 9–14 × 5–8 mm, apex rounded or retuse, often erose-denticulate.

stipitate, obovoid, 3–4 mm.

oblong, 4–5 mm.

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

1–6, yellow to brown, purple-mottled, globose, 1.2–1.5 mm, slightly rugose.

= 16.

= 16.