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 brown or purple, glabrous.

9-21-foliolate;

petioles 2-11 cm.

5-9-foliolate;

petioles 1-6 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 rather thick and ± rigid;

surfaces abaxially dull, papillose, adaxially glossy, green;

terminal leaflet stalked, blade 3.6-9.5 × 2-5.2 cm, 1.3-2.1 times as long as wide;

lateral leaflet blades lance-elliptic to elliptic-ovate or narrowly oblong, 1(-3)-veined from base, base rounded to obtuse or truncate, margins undulate, toothed, each with 6-12 teeth 1-4 mm, tipped with spines to 1.6-2.8 × 0.2-0.3 mm, apex acute to rounded-obtuse.

absent.

absent.

racemose, dense, 30-70-flowered, 6-17 cm;

bracteoles membranous, apex acute, obtuse, or rounded.

racemose, dense, 25-60-flowered, 3-10 cm;

bracteoles membranous, apex obtuse or rounded.

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 and glaucous, oblong-ovoid, 7-10 mm, juicy, solid.

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

scales 3-8 mm, deciduous.

= 56.

= 28.