Flora of North America species comparison

of 2d-year stems grayish brown, glabrous.

of 2d-year stems gray-brown or purplish, glabrous.

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

5-9-foliolate;

petioles 1-6 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 thin and flexible or rather rigid;

surfaces abaxially glossy, smooth, adaxially glossy, green;

terminal leaflet stalked, blade 5.1-8.7(-14.5) × 2.4-4.5(-5.5) cm, 1.7-2.5 times as long as wide;

lateral leaflet blades lance-ovate to lance-elliptic, 1(-3)-veined from base, base obtuse or truncate, rarely weakly cordate, margins plane or undulate, toothed, each with 5-21 teeth 0-2 mm tipped with spines to 0.8-2.2 × 0.2-0.3 mm, apex acute or sometimes obtuse or rounded.

absent.

absent.

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

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

racemose, dense, 30-60-flowered, 3-9(-11) cm;

bracteoles membranous, apex rounded or obtuse, sometimes apiculate.

anther filaments with distal pair of recurved lateral teeth.

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

blue, glaucous, oblong-ovoid, 6-10 mm, juicy, solid.

scales 3-7 mm, deciduous.

scales 4-8(-14) mm, deciduous.

filaments with distal pair of recurved lateral teeth.

= 28, 56.