Flora of North America species comparison

of 2d-year stems tan, glabrous.

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

5-9-foliolate;

petioles 2-8 cm.

3-9-foliolate;

petioles 0.5-4 cm.

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.

blades thick and rigid;

surfaces abaxially dull, papillose, adaxially dull, glaucous;

terminal leaflet stalked, at least on most leaves, blade 4-8 × 2-5 cm, 1.3-1.9 times as long as wide;

lateral leaflet blades ovate to oblong-ovate or elliptic, 1(-3)-veined from base, base obtuse, rarely truncate, margins plane or undulate, toothed, with 2-10 teeth 1-3 mm tipped with spines to 1.6-3 - 0.3-0.4(-0.5) mm, apex obtuse or rounded, rarely broadly acuminate.

absent.

absent.

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

bracteoles ± corky, apex rounded to acute.

racemose, dense, 30-45-flowered, 2-4 cm;

bracteoles membranous, apex rounded or obtuse, sometimes apiculate.

anther filaments with distal pair of recurved lateral teeth.

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

dark blue, glaucous, oblong-ovoid to spheric, 5-8 mm, juicy, solid.

scales 11-13 mm, persistent.

scales 3-6 mm, deciduous.

= 28.