Flora of North America species comparison

erect, sparsely branched.

erect or ascending, cespitose, branched from base, numerous short stems.

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 lanceolate, 1.8–2 cm, margins entire, apex acute-acuminate;

petiole 2.5–10 cm;

petiolules to 0.5 mm;

leaflets 3, blades linear, lanceolate, or narrowly elliptic, 1.5–6 × 0.3–1 cm, base cuneate, veins moderately thickened, margins entire, apex acuminate or narrowly acute, surfaces glabrous or pubescent.

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, 10–20+-flowered, globose, 2.3–3.5 × 2.5–4 cm;

involucres formed of proximal bracteoles, bases sometimes connate.

2.8–3.4 cm.

2–28 cm.

straight, 0.5–0.8 mm;

bracteoles linear, 1–2 mm.

reflexed in fruit, 2–4 mm;

bracteoles ovate, 2–4 mm, truncate or acuminate.

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.

15–22 mm;

calyx campanulate, 8–15 mm, pubescent, veins 10, tube 2.5–7 mm, lobes unequal, subulate, orifice open;

corolla red-purple, 16–20 mm, banner broadly oblong-elliptic, 16–20 × 6–7 mm, apex acute, apiculate.

oblong, 2–4 mm.

oblong, 5–6 mm.

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

1–3, brown, ovoid-reniform, 2.5 mm, smooth.

= 16, 48.