Flora of North America species comparison

monomorphic, without short axillary shoots.

monomorphic, without short axillary shoots.

of 2d-year stems brown or yellow-brown, glabrous.

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

9-21-foliolate;

petioles 2-11 cm.

3-9-foliolate;

petioles 0.5-4 cm.

blades thin and ± flexible;

surfaces abaxially rather dull, smooth, adaxially dull, somewhat glaucous;

terminal leaflet stalked, blade 2.9-8.4 × 1.2-4.8 cm, 1.8-3.2 times as long as wide;

lateral leaflet blades lance-ovate to ovate, 4-6-veined from base, base rounded to cordate, margins plane, toothed, each with 6-13 teeth 1-2(-3) mm tipped with spines to 1-2.4 × 0.1-0.2 mm, apex acute or broadly 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, 30-70-flowered, 6-17 cm;

bracteoles membranous, apex acute, obtuse, or rounded.

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

bracteoles membranous, apex rounded or obtuse, sometimes apiculate.

anther filaments without distal pair of recurved lateral teeth.

anther filaments with distal pair of recurved lateral teeth.

blue, glaucous, oblong-ovoid or globose, 8-11 mm, juicy, solid.

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

scales (13-)20-44 mm, persistent.

scales 3-6 mm, deciduous.

= 56.

= 28.