Flora of North America species comparison

erect, branched from base and distally, or unbranched.

prostrate to ascending, branched.

palmate;

stipules ovate-oblong, 0.5–1.8 cm, margins entire, toothed, or irregularly lobed, apex acuminate;

petiole 0.5–10 cm;

petiolules to 1 mm;

leaflets 3, blades broadly obovate or elliptic, 1.7–3.3 × 1.1–2 cm, base cuneate, veins fine, margins entire or denticulate, apex rounded, obtuse, or retuse, surfaces pilose, abaxial less so.

palmate;

stipules ovate, 0.5–3 cm, margins entire or slightly toothed, ciliate, apex acute to acuminate;

petiole 1–20 cm;

petiolules 1 mm;

leaflets 3, blades broadly obcordate, 0.8–2.8 × 1–3 cm, base cuneate, veins delicate, widely spaced, margins mostly entire, slightly dentate distally, apex emarginate, surfaces appressed-sericeous.

terminal or axillary, 30–50-flowered, bluntly conic, ellipsoid, globose, or subglobose, 1.5–3 × 1.5–2.5 cm;

involucres absent.

axillary, elongate and reflexed, pushing into substrate after anthesis, fertile flowers 2–7, sterile flowers 0–80, globose or cylindric, 0.5–1.5 × 0.8–1.5 cm;

involucres absent.

5–15 cm.

2–6.5 cm.

absent;

bracteoles cuplike, to 0.5 mm.

reflexed after anthesis, 0.2–0.4 mm;

bracteoles absent.

13–16 mm;

calyx tubular, 9–12 mm, pubescent, veins 20–30, tube 3 mm, lobes nearly equal, appearing rigidly erect, linear-setaceous, plumose, sinuses acute, orifice open;

corolla white to pink with purple tips, 12–16 mm, banner ovate-oblong, 12–15 × 4 mm, apex broadly rounded, emarginate.

fertile ones 7–15 mm;

calyx tubular, 5–6 mm, glabrous or hairy, veins indistinct, tube 3–4 mm, lobes subequal, pubescent or glabrous, spreading, orifice open;

corolla white, pink, or pink-striped, 7–10 mm, banner ovate-elliptic, 7–10 × 1.5–2 mm, apex rounded;

sterile flowers 4–7 mm;

calyx teeth linear;

corolla absent.

obovoid, 4 mm.

subterranean, obovoid, 3–4 mm.

1, dark brown, ellipsoid, 2–3 mm, smooth.

1, purplish black, ellipsoid, 2.6–3 mm, smooth, dull.

= 16.