Flora of North America species comparison

prostrate, branched.

ascending, branched from slender, rhizomatous crown.

palmate;

stipules narrowly triangular, 0.7–1.7 cm, margins entire or finely serrulate, apex usually acute or acuminate, sometimes 2-fid;

petiole 0.3–5 cm;

petiolules to 1 mm;

leaflets 3, blades obovate to obcordate, 0.9–1.6 × 0.7–1.2 cm, base cuneate, veins moderately thickened, margins serrate to weakly so, apex rounded or emarginate, mucronulate, surfaces slightly hairy abaxially, glabrous adaxially.

palmate;

stipules ovate or lanceolate, 0.5–2 cm, margins entire proximally, 1–3-toothed distally, apex acuminate or acute;

petiole 1.5–10 cm;

petiolules to 1 mm;

leaflets 3, blades obovate or elliptic, 0.5–4.2 × 0.3–2.5 cm, base cuneate, veins fine or slightly thickened, margins serrulate, apex acute, rounded, or retuse, apiculate, surfaces appressed-pubescent.

axillary, 10–20-flowered, depressed-globose or globose, 0.8–1.6 × 0.9–1.6 cm, rachis prolonged beyond flowers;

involucres a narrow rim, or slightly proximally connate bracteoles of proximal flowers, 0.1–0.5 mm.

terminal, 6–30-flowered, globose, 2.3–3.1 × 2–3 cm, rachis prolonged beyond flowers;

involucres absent.

2.8–5 cm.

bent proximal to flowers, inflorescence appearing inverted, 2.5–12 cm.

reflexed in fruit, 1–3 mm;

bracteoles linear-triangular, 0.5 mm.

reflexed in fruit, 1.5–2 mm;

bracteoles minute, scalelike, membranous, to 0.3 mm.

5.7–6.7 mm;

calyx tubular, 3.3–6.5 mm, pubescent, veins 10, tube 0.8–1 mm, lobes subequal, narrowly triangular, orifice open;

corolla white or pink, 5.3–6.5 mm, banner obovate, 5.3–6.5 × 2.8–3.8 mm, apex broadly rounded or broadly acute.

13–17 mm, sweetly fragrant;

calyx campanulate, 4.5–5 mm, appressed-pubescent, veins 5, tube 2 mm, lobes subequal, linear, orifice open;

corolla white, sometimes with purplish or buff-pink veins, 12–15 mm, banner elliptic, 12–15 × 4 mm, longer than wing and keel petals, apex tapered, sometimes retuse.

obovoid, 4.3–4.4 mm.

oblong to subglobose, 5 mm.

2, brownish orange or olive-brown, globose or broadly reniform, 1.2–1.7 mm, smooth.

1 or 2, dark brown, ± globose, 1.2 mm, smooth.

= 16.

= 16, 32.