Flora of North America species comparison

erect, sparsely branched.

erect or ascending, branched.

palmate;

stipules lanceolate, 0.8–1.5 cm, margins entire or slightly lacerate, apex acuminate;

petiole 1.6–2.4 cm;

petiolules 0.5 mm;

leaflets 3, blades obovate, oblanceolate, or elliptic, 0.8–3 × 0.5–0.7 cm, base cuneate, veins fine or thickened distally, margins finely serrulate, apex acute, mucronate, or retuse, surfaces glabrous.

palmate;

stipules ovate-lanceolate, 0.5–2.5 cm, membranous, margins entire or slightly serrate, apex long-acuminate;

petiole 0.5–9 cm;

petiolules to 0.5 mm;

leaflets 3, blades obovate to obcordate, 0.5–2.5 × 0.2–1.5 cm, base cuneate, veins moderately thickened, margins setose-serrulate, apex rounded, shallowly retuse, surfaces glabrous.

usually terminal, sometimes axillary, 30–50-flowered, subglobose, 1.2–1.8 × 1.5–2 cm;

involucres shallowly bowl-shaped, 18–22 mm, deeply incised, lobes slender, irregular or bifurcate.

axillary or terminal, 10–25-flowered, globose to subglobose, 0.5–2 × 0.5–2 cm, rachis prolonged beyond flowers;

involucres a narrow, membranous, dentate rim, to 0.5 mm.

2.8–3.4 cm.

1–9 cm.

straight, 0.5–0.8 mm;

bracteoles linear, 1–2 mm.

becoming dramatically reflexed, 3–4 mm;

bracteoles low, cuplike, membranous, to 0.5 mm.

10–13 mm;

calyx tubular, 0.5–0.6 mm, glabrous, veins 10, tube 2 mm, lobes ± equal, 3–4 mm, orifice open;

corolla white to purple, 9–12 mm, banner oblong, 7–12 × 2–3 mm, apex retuse.

5–7.5 mm;

calyx narrowly campanulate, 4.5–6.5 mm, glabrous, veins 10, tube 2–2.5 mm, lobes unequal, long-triangular, margins green or purple, orifice open;

corolla white, pink, or purple, 5–8 mm, banner ovate, 5–8 × 3–4 mm, apex broadly rounded, retuse or apiculate.

oblong, 2–4 mm.

ovoid-ellipsoid, 4–6 mm.

2–4, brown, subglobose or mitten-shaped, 1.5 mm, smooth.

1 or 2, tan to brown, mitten-shaped, 1.1–1.5 mm, smooth.

= 16.