Flora of North America species comparison

of 2d-year stems brown, densely tomentose.

of 2d-year stems grayish brown, glabrous.

blade obovate, 1-veined from base, 1.7-3 × 0.9-1.2 cm, thick and rigid, base acute or acuminate, margins reflexed, undulate, toothed or shallowly lobed, each with 2-4 teeth or lobes 1-3 mm high tipped with spines to 1.2-1.6 × 0.2-0.3 mm, apex obtuse or rounded;

surfaces abaxially glossy, smooth, adaxially glossy, green.

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

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.

present, pedately 5-9-fid.

absent.

racemose, rather dense, 10-20-flowered, 3-4 cm;

bracteoles membranous, apex acuminate.

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

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

anther filaments without distal pair of recurved lateral teeth.

dark purple, spheric, 6-7 mm, juicy, solid.

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

scales 2-4 mm, deciduous.

scales 3-7 mm, deciduous.

filaments with distal pair of recurved lateral teeth.