Flora of North America species comparison

erect or ascending, branched.

decumbent, branched.

palmate;

stipules linear-lanceolate, 1–3.5 cm, margins entire, apex subulate or setaceous;

petiole 0.5–10 cm;

petiolules 1 mm;

leaflet 3, blades obovate to oblong, elliptic or lanceolate, 0.5–4 × 0.5–1.5 cm, base cuneate, veins prominent, thickened, margins spinulose-denticulate, apex apiculate, surfaces glabrous.

palmate;

stipules broadly ovate, 1.3–1.7 cm, margins entire or faintly denticulate, apex acuminate;

petiole 7–17 cm (distalmost 6–8 cm);

petiolules 1–1.5 mm;

leaflets 3, blades ovate or orbiculate, 0.8–3.5 × 0.5–1.9 cm, base cuneate, veins fine, margins dentate to denticulate, apex rounded or obcordate, surfaces glabrous.

terminal or axillary, 50–100+-flowered, globose, ovoid, or oblong, 3–6 × 2–3.5 cm;

involucres absent.

terminal, 20–50-flowered, globose becoming subglobose or hemispheric, 1.2–2.5 × 1.8–2.7 cm;

involucres a narrow rim.

1–12 cm.

2.2–2.5 cm.

absent;

bracteoles lanceolate, 6–7 mm, acuminate.

reflexed in fruit, 5–7 mm;

bracteoles broadly ovate, membranous, to 0.5 mm, truncate.

12–16 mm;

calyx urceolate, not bilabiate, inflated in fruit, 6–10 mm, glabrous, veins 20–36, connected by transverse veins in fruit, tube 3–5 mm, lobes reflexed, subequal, subulate, as long as tube, orifice constricted;

corolla white becoming pink, 12–15 mm, banner ovate, broadly clawed, striate, 12–15 × 2–4 mm, apex acute-acuminate.

9–11 mm;

calyx campanulate, 3–5 mm, sparsely pubescent or glabrous, veins 10, tube 1–2 mm, lobes equal, narrowly triangular to subulate, 2–3.7 mm, orifice open;

corolla white, 9–10 mm, banner ovate-oblong, 9–10 × 6–8 mm, apex rounded or retuse.

ellipsoid, 2.5–2.5 mm, shorter than calyx.

oblong, 3–4 mm.

2 or 3, brown, ovoid, 1–1.5 mm, roughened.

2–4, yellow to brown, purple-mottled, globose, 1.2–1.5 mm, slightly rugose.

= 16.