Flora of North America species comparison

of 2d-year stems grayish brown, glabrous.

of 2d-year stems purple, glabrous.

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

blade narrowly elliptic, 1-veined from base, 1.7-4.6 × 0.6-1.7 cm, thin and flexible, base long-attenuate, margins plane, entire or toothed, each with 3-12 teeth 0-1 mm high tipped with bristles to 0.4-1.4 × 0.1-0.2 mm, apex acute to obtuse or rounded;

surfaces abaxially dull or glossy and smooth, adaxially dull or glossy and not glaucous.

blades thin and ± rigid or flexible;

surfaces abaxially glossy, smooth, adaxially glossy, green;

terminal leaflet stalked, blade 2.6-6.2 × 2-4.5 cm, 1.3-1.9 times as long as wide;

lateral leaflet blades elliptic to ovate or broadly lanceolate, 1(-3)-veined from base, base broadly obtuse, truncate, or weakly cordate, margins plane to crispate, toothed, each with 5-22 teeth 0-2 mm tipped with spines to 1-3 × 0.1-0.3 mm, apex acute to rounded-obtuse.

absent.

present, simple or 1-2-pinnately branched.

racemose, dense, 25-50-flowered, 2-9 cm;

bracteoles membranous, apex rounded to broadly acute, sometimes apiculate.

racemose, lax, 4-15-flowered, 1.5-4.5 cm;

bracteoles membranous, apex acuminate.

anther filaments without distal pair of recurved lateral teeth.

blue, glaucous, oblong-ovoid to subspheric, 6-7 mm, juicy, solid.

red, not glaucous, oblong-ellipsoid, 6-8 mm, juicy, solid.

scales 3-7 mm, deciduous.

scales 1-2 mm, deciduous.

filaments with distal pair of recurved lateral teeth.