Flora of North America species comparison

climbing and creeping, glabrous or densely pubescent.

alternate, odd-pinnate;

stipules present, persistent, peltate, 8–16(–25) mm;

petiolate;

leaflets 3, stipels present, blades 8–20(–26) cm, margins lobed or entire, surfaces pubescent.

15–40-flowered, axillary or terminal, pseudoracemes, unbranched or paniculate;

bracts present, caducous, ovate to lanceolate;

bracteoles 2.

papilionaceous, (2 or)3[4–10] per node;

calyx campanulate, (6–)10–18 mm, lobes 5, adaxial ones ± connate, pubescent;

corolla purplish, blue, or white, 10–25 mm, veins evident;

stamens 10, monadelphous, vexillary stamen becoming distinct as ovary expands, distinct part upturned;

anthers dorsifixed, on alternating long and short filaments;

ovary elongate, pubescent.

legumes, sessile, flattened, cylindrical [flattened-oblong], well exceeding calyx, dehiscent, with or without transverse lines between seeds, septate, pubescent.

[2–](5–)10–15[–20], flattened-ovoid [oblong or barrel-shaped].

, perennial [shrubs], robust, woody or coarsely herbaceous, to 30 m, unarmed;

roots often tuberous.

= 11.