Flora of North America species comparison

of 2d-year stems grayish brown, glabrous.

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

(3-)5-13-foliolate;

petioles 0.5-4.5(-7.5) cm.

3-foliolate;

petioles 0.8-5.4 cm.

blades thin and ± rigid or flexible;

surfaces abaxially glossy, smooth, adaxially glossy, green;

terminal leaflet stalked, blade 2.6-6.2 × 2-4.5 cm, 1.3-1.9 times as long as wide;

lateral leaflet blades elliptic to ovate or broadly lanceolate, 1(-3)-veined from base, base broadly obtuse, truncate, or weakly cordate, margins plane to crispate, toothed, each with 5-22 teeth 0-2 mm tipped with spines to 1-3 × 0.1-0.3 mm, apex acute to rounded-obtuse.

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.

absent.

absent.

racemose, dense, 25-50-flowered, 2-9 cm;

bracteoles membranous, apex rounded to broadly acute, sometimes apiculate.

racemose, lax, 1-8-flowered, 0.5-3 cm;

bracteoles membranous, apex acuminate.

anther filaments without distal pair of recurved lateral teeth.

blue, glaucous, oblong-ovoid to subspheric, 6-7 mm, juicy, solid.

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

scales 3-7 mm, deciduous.

scales 2-3 mm, deciduous.

filaments with distal pair of recurved lateral teeth.