Flora of North America species comparison

of 2d-year stems grayish brown, glabrous.

of 2d-year stems tan, glabrous.

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

5-9-foliolate;

petioles 2-8 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.

blades thick and rigid;

surfaces abaxially smooth, shiny, adaxially dull, gray-green;

terminal leaflet stalked, blade 6.5-9.3 × 4-7 cm, 1.3-2.3 times as long as wide;

lateral leaflet blades ovate or lance-ovate, 4-6-veined from base, base truncate or weakly cordate, margins plane, toothed, with 2-7 teeth 3-8 mm tipped with spines to 1.4-4 × 0.3-0.6 mm, apex acuminate.

absent.

absent.

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

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

racemose, dense, 70-150-flowered, 5-17 cm;

bracteoles ± corky, apex rounded to acute.

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

dark blue, glaucous, oblong-ovoid, 9-12 mm, juicy, solid.

scales 3-7 mm, deciduous.

scales 11-13 mm, persistent.

filaments with distal pair of recurved lateral teeth.