Flora of North America species comparison

erect, unbranched to sparsely branched.

erect, fistulose, unbranched or branched distally.

palmate;

stipules lanceolate to linear, 0.5–2.2 cm, margins entire, apex lanceolate-linear;

petiole 2–3 cm;

petiolules 1+ mm;

leaflets 3, blades linear-lanceolate, 3–5 × 0.2–0.4 cm, base cuneate, veins fine, margins entire, apex acute, surfaces hairy.

palmate;

stipules ovate, 1.5–4.5 cm, margins usually entire, sometimes lobed, apex acuminate;

petiole 0.5–20 cm;

petiolules 1–1.5 mm;

leaflets 3, blades ovate, elliptic, or rhombic, 3.5–9.5 × 2.3–5 cm, base cuneate, veins obscure, margins ± serrate, apex acute, rounded, or obtuse, surfaces glabrous.

terminal, 25–75-flowered, spicate, cylindric or conic, 3–8 × 1.5–2 cm;

involucres absent.

terminal or axillary, 20–70-flowered, globose or ellipsoid, 2.5–4 × 2–2.5 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

1–2.2 cm.

3–11 cm.

erect, 0.5 mm;

bracteoles absent.

strongly reflexed in fruit, 1 mm;

bracteoles minute, blunt or acute, membranous.

10–13 mm;

calyx tubular, 8–13 mm, tuberculate with appressed, stiff hairs, veins 10, tube 3–5 mm, lobes unequal, abaxial lobes longest, subulate-setaceous, spreading stellate in fruit, orifice closed by bilabiate callosities, hairy;

corolla usually pale pink or purple, rarely white, 9–12 mm, banner ovate-elliptic, 9–12 × 2–2.5 mm, apex notched.

10–14 mm;

calyx campanulate, gibbous, 4–5.5 mm, glabrous, veins 10, tube 2–2.5 mm, lobes subequal, linear-lanceolate, orifice open;

corolla white, lemon yellow, or greenish yellow, 11–12 mm, banner elliptic-oblong, 11–12 × 4–5 mm, apex obtuse.

ovoid, leathery distally, transversely dehiscent, 2.2–2.5 mm.

oblong or clavate, 4–5 mm.

1, light brown or yellow, ovoid, 1.6–2 mm, smooth, glossy.

1–3, reddish black or brown, angular, mitten-shaped, 2.5 mm, smooth or slightly roughened, dull.

= 14, 16.