Flora of North America species comparison

erect or decumbent, branched.

erect, branched.

palmate;

stipules lanceolate or ovate, 1–5 cm, margins entire or denticulate, apex acuminate or acute;

petiole 1–15 cm;

petiolules 1 mm;

leaflets 3, blades linear, linear-elliptic, elliptic, lanceolate, lanceolate-oblong, or obovate, 1–5 × 0.4–1.2 cm, base cuneate, veins fine or ± thickened, margins denticulate or serrulate, apex acuminate or acute, surfaces appressed-pubescent abaxially, glabrous, densely villous, or sparsely or densely pilose adaxially.

palmate;

stipules lanceolate, 1–2 cm, margins denticulate distally, plumose-ciliate, apex caudate;

petiole 1–8 cm;

petiolules 1+ mm;

leaflets 3, blades broadly elliptic to oblong, 1–5 × 0.5–1.5 cm, base cuneate, veins fine, margins denticulate, apex usually mucronate, sometimes retuse, surfaces hairy.

terminal or axillary, 25–70-flowered, inverted or horizontal, ellipsoid or globose to subglobose, 2–3 × 1–3 cm, rachis prolonged beyond flowers;

involucres absent.

terminal, 25–100-flowered, ovoid, elongate in fruit, 1–2.5 × 1–1.5 cm;

involucres minute or absent.

bent distally, proximal to flowers, 3–18 cm.

0.5–9 cm.

reflexed, to 0.3 mm;

bracteoles absent.

absent;

bracteoles absent.

9–18 mm;

calyx campanulate, curved in fruit, 4–11 mm, villous, veins 10, tube 1.5–2.5 mm, lobes unequal, 2–3 times tube, subulate, often strongly curved and twisted, plumose, orifice open;

corolla white, cream, or purple, 8–16 mm, banner oblanceolate, 8–16 × 3–5 mm, apex rounded or retuse, recurved;

ovaries pubescent distally.

13–16 mm;

calyx cylindric (campanulate in fruit), 6–8 mm, appressed-hairy, veins 10, tube 1–2 mm, lobes erect to slightly spreading, equal or abaxial 2 slightly longer, narrowly triangular, orifice open, hairy;

corolla cream or yellowish white, 13–16 mm, banner narrowly spatulate, 13–16 × 3–4 mm, apex obtuse.

ovoid, 2–3.5 mm.

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

(1 or)2–4, yellow-brown to brown, mitten-shaped or subglobose, 1.2–2 mm, smooth.

1, yellow, ovoid, 2–2.2 mm, smooth, glossy.

= 16.