Flora of North America species comparison

erect to ascending, branched.

cespitose, short-branched.

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 broadly lanceolate, 1–1.5 cm, margins entire, apex acute-acuminate;

petiole 0.6–1.2 cm;

petiolules to 0.5 mm;

leaflets 3, blades ovate, oblong-elliptic, or elliptic, 0.8–3 × 0.4–1.5 cm, base cuneate, veins moderately thickened, margins entire or faintly serrate, apex acute to rounded or minutely apiculate, surfaces glabrous.

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

involucres absent.

terminal, 4–15-flowered, ovoid-ellipsoid, 2.5–4 × 2.2–3 cm, rachis prolonged ca. 10 mm beyond distalmost flower;

involucres absent.

1.5–3.5 cm.

6–20 cm.

reflexed, 0.7–1.2 mm;

bracteoles a fringe of red setae.

strongly reflexed, 1–2 mm;

bracteoles linear, minute.

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.

15–18 mm;

calyx whitish, campanulate, 7–10 mm, sparsely pubescent, veins 10, tube 4–5 mm, lobes subequal, longer than tube, narrowly triangular, acuminate, orifice open;

corolla purple to magenta, 15–18 mm, banner broadly ovate, 15–17 × 7–9 mm, apex obtuse or retuse.

stipitate, oblong, 2–2.5 mm.

oblong, 6.5–7 mm.

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

1–3, yellow and red, flattened ovoid, 2–2.5 mm, smooth.

= 14.

= 16.