Flora of North America species comparison

erect or ascending, branched.

erect-ascending, flexuous, often zigzag, 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 lanceolate-linear, 1.8–2.8 cm, margins entire, ciliate, apex subulate;

petiole 1–9 cm;

petiolules 1 mm;

leaflets 3, blades elliptic-oblong, obovate, or ovate, 1.5–5 × 0.8–3.5 cm, base cuneate, veins arcuate, forked, margins entire, finely ciliate, apex obtuse to acute, surfaces appressed-pubescent.

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

involucres absent.

terminal or axillary, rarely paired, 20–50-flowered, globose or ovoid, 1.5–4 × 1.3–3.8 cm;

involucres absent.

1–12 cm.

1–3 cm.

absent;

bracteoles lanceolate, 6–7 mm, acuminate.

straight, 0.5 mm;

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.

15–18 mm;

calyx cylindric, 6–10 mm, glabrous, veins 10–15, tube 2.5–3.5 mm, lobes unequal, subulate-setaceous, orifice glabrous or hairy distally, closed;

corolla usually reddish purple, rarely white, 12–20 mm, banner lanceolate-elliptic, 1.2–2 × 4–5 mm, apex acute.

ellipsoid, 2.5–2.5 mm, shorter than calyx.

ovoid to globose, leathery distally, transversely dehiscent, 2–3 mm.

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

1 or 2, yellow-brown, mitten-shaped, 1–1.5 mm, smooth, lustrous.

= 16.

= 48, 64, 68, 70, 72, 80, ca. 126.