Flora of North America species comparison

erect or ascending, branched.

procumbent, ascending, or erect, 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 obovate-lanceolate, 0.5–0.8 cm, margins entire, apex subulate or cuspidate;

petiole 4–10 cm;

petiolules 0.5 mm;

leaflets 3, blades obcordate or obovate, 0.6–1 × 0.4–0.6 cm, base cuneate, veins fine, margins finely serrate, apex truncate or emarginate, surfaces glabrous.

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

involucres absent.

axillary, 1–5-flowered, loose, oblong, 0.5–1.2 × 0.1–0.5 cm;

involucres absent or bracteoles shallow, cuplike, ± equaling pedicels.

1–12 cm.

0.5–2 cm.

absent;

bracteoles lanceolate, 6–7 mm, acuminate.

straight or slightly reflexed, 1–3 mm;

bracteoles lanceolate, 1 mm.

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.

5–10 mm;

calyx campanulate, 4–4.5 mm, glabrous, veins 10, tube 2.5–3 mm, lobes unequal, triangular, orifice open;

corolla pink or white, 5–9 mm, banner oblong, 5–9 × 2–3 mm, apex rounded.

ellipsoid, 2.5–2.5 mm, shorter than calyx.

stipitate, ellipsoid-oblong, 6–10 mm.

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

4–9, black or dark brown, ellipsoid-globose, 1–1.5 mm, smooth, glossy.

= 16.

= 16.