Flora of North America species comparison

erect to ascending, branched.

cespitose, numerous, short, branched from woody crown.

pinnate;

stipules ovate-lanceolate, 0.5–0.8 cm, margins entire, glandular, apex acuminate;

petiole 0.3–2 cm;

lateral leaflet petiolules 0.5–0.6 mm, terminal leaflet stalk 3–5 mm;

leaflets 3, blades rhombic to obovate, 0.4–1.5 × 0.4–0.8 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins denticulate distally, apex truncate or retuse, surfaces strigose adaxially.

palmate;

stipules ovate to lanceolate, 0.5–1.5 cm, margins entire or irregularly dentate, apex acute to acuminate;

petiole 1.5–10 cm;

petiolules to 0.5 mm;

leaflets 3–5, blades ovate, obovate, oblong, or elliptic, 0.8–3 × 0.2–1.8 cm, base cuneate, veins thickened distally, margins spinose-dentate, apex rounded or acute, surfaces usually pubescent, sometimes glabrous adaxially.

axillary, 30–60-flowered, globose or broadly ovoid, 0.8–1.5 × 0.7–1 cm;

involucres absent.

terminal, 6–15-flowered, subglobose, 1–2 × 1.3–2.4 cm;

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

1.5–3.5 cm.

1–6.5 cm, ± surpassing leaves, not bent distally.

reflexed, 0.7–1.2 mm;

bracteoles a fringe of red setae.

erect, those of proximal flowers sometimes reflexed, 1–4 mm;

bracteoles ovate-triangular, to 0.8 mm.

4.3–5 mm;

calyx campanulate, strongly bilabiate, 1.3–1.5 mm, glabrous, veins 5, tube 0.3–0.6 mm, lobes unequal, adaxial deltate, very short, lateral and abaxial linear-subulate, each tipped with 1 or 2 stiff hairs, orifice open;

corolla yellow becoming brown, 3.5–6 mm, ribbed, banner persistent, obovate, enveloping other petals, boat-shaped, 4.3–5 × 2.8–3.2 mm, apex broad, acute.

7.5–13 mm;

calyx tubular-campanulate, 4–7.5 mm, strigose, veins 10, tube 2–3 mm, lobes subequal, narrowly triangular, orifice open;

corolla pink-purple, often with whitish tips, sometimes nearly wholly whitish, 7–12 mm, banner oblong, 7–14 × 5–7 mm, apex rounded, usually retuse.

stipitate, oblong, 2–2.5 mm.

ovoid, 4–5 mm.

1 or 2, yellow, ellipsoid, 1–1.5 mm, smooth, lustrous.

1, tan to brown, mitten-shaped, 3–4.5 mm, roughened.

= 14.