Flora of North America species comparison

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

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

3-foliolate;

petioles 0.8-5.4 cm.

3-9-foliolate;

petioles 0.5-4 cm.

blades thick and rigid;

surfaces abaxially dull, papillose, adaxially dull, ± glaucous;

terminal leaflet sessile, blade 2.3-5.8 × 0.9-2 cm, 1.6-3.1 times as long as wide;

lateral leaflet blades narrowly lanceolate or narrowly elliptic, 1-veined from base, base acute or acuminate, rarely rounded-acute, margins plane, toothed or lobed, with 1-3 teeth or lobes 3-7 mm high tipped with spines to 1-2 × 0.2-0.3 mm, apex narrowly acute or 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, lax, 1-8-flowered, 0.5-3 cm;

bracteoles membranous, apex acuminate.

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.

red, sometimes glaucous, spheric, 6-11 mm, juicy, solid.

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

scales 2-3 mm, deciduous.

scales 3-6 mm, deciduous.

= 28.