Flora of North America species comparison

erect or ascending, branched.

erect or ascending, branched from base.

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 ovate-lanceolate, 0.4–0.8 cm, margins entire, apex acuminate, flared outward;

petiole 0.5–6 cm;

petiolules 1+ mm;

leaflets 3, blades obovate, elliptic, or narrowly elliptic, 0.8–2.5 × 0.4–1.6 cm, base cuneate, veins prominent, thickened abaxially, margins denticulate or serrate, apex rounded, acute, or apiculate, surfaces sparsely hairy.

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

involucres absent.

terminal and axillary, 15–50-flowered, obconic or obovoid, 1–2 × 1–1.6 cm;

involucres absent.

1–12 cm.

0.8–2 cm.

absent;

bracteoles lanceolate, 6–7 mm, acuminate.

absent;

bracteoles absent.

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, 5–8 mm, glabrescent, veins 10, tube 2–3 mm, lobes unequal, triangular-elliptic, stellate-spreading, orifice closed by bilabiate callosities;

corolla creamy white, 8–10 mm, banner oblong-spatulate, 8–10 × 2–3 mm, apex acute.

ellipsoid, 2.5–2.5 mm, shorter than calyx.

obovoid, leathery distally, transversely dehiscent, 1.6–2 mm.

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

1, tan or brown, ovoid, 1.2–1.4 mm, smooth, glossy.

= 16.

= 16.