Flora of North America species comparison

cespitose, branched, numerous short stems.

erect or ascending, cespitose, much-branched.

palmate;

stipules lanceolate-linear, 1.5–2 cm, margins entire, apex acuminate;

petiole 0.6–3.5 cm;

petiolules to 0.5 mm;

leaflets 3, blades oblong-elliptic, oblanceolate, or obovate, sometimes folded, 0.6–3.2 × 0.2–0.6 cm, base cuneate, veins obscure, margins entire, apex acute, surfaces glabrous or hairy.

palmate;

stipules oblanceolate, 0.5–1.4 cm, margins entire, apex acute-acuminate;

petiole 0.5–4 cm;

petiolules to 0.1 mm;

leaflets 3, blades oblanceolate, often folded, 0.4–1.5 × 0.2–0.4 cm, base cuneate, veins obscure, margins subentire to denticulate distally, apex acute, mucronulate, surfaces villous.

axillary or terminal, 5–16-flowered, globose, 1.5–3.5 × 1.2–3.3 cm;

involucres formed of proximal bracteoles, bases sometimes connate.

terminal, usually formed of 2 sessile heads, 15–25-flowered, globose, 0.8–2 × 0.6–1.5 cm;

involucres absent, distal stipules and leaves sometimes forming involucrelike structure.

2–17 cm.

between distal leaves or involucrelike structure and inflorescences 0.5–6 cm.

erect, 1.5–2 mm;

bracteoles linear-lanceolate, scarious, 2–6 mm, or scalelike.

straight, (0–)1–2 mm;

bracteoles broadly ovate, truncate, membranous, to 0.5 mm.

12–16 mm;

calyx campanulate, 6–9 mm, pubescent, veins 10, tube 2–5 mm, lobes unequal, linear-subulate, orifice open;

corolla often bicolored cream and violet, sometimes all red-purple or violet, 1.2–1.6 mm, banner broadly elliptic-ovate, 11–15 × 4–5 mm, folded distally, apex rounded, apiculate;

ovaries pubescent distally.

10–15 mm;

calyx tubular-campanulate, 6–9 mm, rough-hairy or glabrous, veins 10, tube 3–6 mm, lobes subequal, subulate, orifice open;

corolla light purple, 10–15 mm, banner oblong, 9–13 × 3–4 mm, apex rounded or truncate;

ovaries pubescent distally.

oblong, 4–6 mm.

ellipsoid, 4–5 mm.

1–3, dark brown, ovoid-reniform, 2–2.5 mm, smooth.

1 or 2, brown, ovoid, 1.5–2 mm, smooth.

= 16.