Flora of North America species comparison

erect to ascending, branched.

prostrate, ascending, or erect, 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 ovate, 0.6–1 cm, margins entire or serrate, apex acuminate;

petiole 2–5 cm;

petiolules 1 mm;

leaflets 3, blades obovate, 0.6–1.4 × 0.3–1.1 cm, base cuneate, veins moderately thickened, margins denticulate, apex rounded, sometimes retuse, surfaces glabrous except on veins abaxially.

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

involucres absent.

axillary or terminal, 5–40-flowered, globose, 1–2 × 1–2 cm;

involucres minute.

1.5–3.5 cm.

± geniculate proximal to flowers, inflorescence appearing sideways or inverted, 3.5–10 cm.

reflexed, 0.7–1.2 mm;

bracteoles a fringe of red setae.

reflexed, 2–3 mm;

bracteoles ovate or lanceolate, 0.5 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.

4.5–7 mm;

calyx usually pink to magenta, campanulate, bilabiate, 3–4 mm, pilose, veins 5, slightly branched in lobes, tube 0.8–1 mm, lobes unequal, abaxial 3 lanceolate or linear, 0.8–1 mm, villous, adaxial 2 broadly triangular, 2.5–3 mm, orifice open;

corolla creamy white, often pink-tinged, darkening in age, 4–4.5 mm, banner broadly ovate-rhombic, 4–4.5 × 3.8–4 mm, apex rounded, slightly erose.

stipitate, oblong, 2–2.5 mm.

oblong, 3–4 mm.

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

2–4, yellow-brown to brown, globose to mitten-shaped, 1.1–1.6 mm, rugose.

= 14.

= 16.