Flora of North America species comparison

erect, branched.

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

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 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.

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.

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

involucres formed of proximal bracteoles, bases sometimes connate.

3–8 cm.

2–28 cm.

reflexed in fruit, 1–3 mm;

bracteoles broadly triangular, membranous, to 0.5 mm.

reflexed in fruit, 2–4 mm;

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

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.

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.

stipitate, obovoid, 3–4 mm.

oblong, 5–6 mm.

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

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

= 16.

= 16, 48.