Flora of North America species comparison

monomorphic, without short axillary shoots.

± monomorphic, seldom with short axillary shoots.

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

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

9-21-foliolate;

petioles 2-11 cm.

5-9-foliolate;

petioles 1-5 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 glossy, green;

terminal leaflet stalked, blade 2.6-6.6 × 1.7-4.4 cm, 1-2.5 times as long as wide;

lateral leaflet blades oblong to ovate or elliptic, 1-3-veined from base, base obtuse to rounded or truncate, margins plane to crispate, toothed, each with 3-5 teeth 1-5 mm tipped with spines to 1.2-3.8 × 0.2-0.6 mm, apex acute to rounded.

absent.

absent.

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

bracteoles membranous, apex acute, obtuse, or rounded.

racemose, dense, 30-50-flowered, 2-7 cm;

bracteoles membranous, apex rounded or obtuse.

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.

blue, glaucous, oblong-ovoid, 6-11 mm, juicy, solid.

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

scales 2-6 mm, deciduous.

= 56.