Flora of North America species comparison

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

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

5-9(-11)-foliolate;

petioles 0.2-0.8(-3) cm.

(3-)5-7-foliolate;

petioles (1-)3-9 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;

surfaces abaxially dull, papillose, adaxially dull, rarely glossy, somewhat glaucous;

terminal leaflet stalked, blade 3.2-9.5 × 2.3-6 cm, 1.2-2.2(-2.5) times as long as wide;

lateral leaflets ovate or elliptic, 1(-3)-veined from base, base rounded to obtuse or truncate, margins plane, toothed, with 6-24 teeth 0.5-3 mm tipped with spines to 0.6-2.8 × 0.1-0.25 mm, apex rounded, rarely obtuse or even broadly acute.

absent.

absent.

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

bracteoles membranous, apex acuminate.

racemose, dense, 25-50-flowered, 3-10 cm;

bracteoles membranous, apex rounded to obtuse or broadly acute.

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 3-8 mm, deciduous.

filaments with distal pair of recurved lateral teeth.

= 28.