Flora of North America species comparison

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

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

5-9(-11)-foliolate;

petioles 0.2-0.8(-3) cm.

5-9-foliolate;

petioles 1-6 cm.

blades thick and rigid;

surfaces abaxially dull, papillose, adaxially dull, glaucous;

terminal leaflet stalked in most or all leaves, blade 1-2.6(-4) × 0.7-1.8(-2.5) cm, 1-2.5 times as long as wide;

lateral leaflet blades elliptic to ovate or orbiculate, 1-3-veined from base, base obtuse or truncate, margins strongly crispate, toothed or lobed, with 2-5 teeth 2-6 mm high tipped with spines to 0.8-2.2 × 0.2-0.3 mm, apex obtuse to acuminate.

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, lax, 3-6-flowered, 2.5-6.5 cm;

bracteoles membranous, apex acuminate.

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.

anther filaments with distal pair of recurved lateral teeth.

yellow or red to brown, ± glaucous, spheric, 12-18 mm, dry, inflated.

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

scales 2-4 mm, deciduous.

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

= 28, 56.