Flora of North America species comparison

of 2d-year stems grayish brown, glabrous.

of 2d-year stems gray, glabrous.

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

blade obovate to oblanceolate or almost elliptic, 1-veined from base, 2-6(-8) × 0.9-2.8 cm, thin and flexible, base short- to long-attenuate, margins plane, finely serrate, each with (8-)16-30 teeth 0-1 mm high tipped with spines or bristles to 0.6-1.4 × 0.1 mm, apex rounded or obtuse;

surfaces abaxially dull, smooth, adaxially dull, ± 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 3-fid.

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

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

racemose, lax, 10-20-flowered, 2-6 cm;

bracteoles membranous, apex acute.

anther filaments without distal pair of recurved lateral teeth.

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

red or purple, ellipsoid, 10-11 mm, juicy, solid.

scales 3-7 mm, deciduous.

scales 2-3 mm, deciduous.

filaments with distal pair of recurved lateral teeth.