Flora of North America species comparison

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

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

3-foliolate;

petioles 0.8-5.4 cm.

5-9-foliolate;

petioles 1-6 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 rather thick and ± rigid;

surfaces abaxially dull, papillose, adaxially glossy, green;

terminal leaflet stalked, blade 3.6-9.5 × 2-5.2 cm, 1.3-2.1 times as long as wide;

lateral leaflet blades lance-elliptic to elliptic-ovate or narrowly oblong, 1(-3)-veined from base, base rounded to obtuse or truncate, margins undulate, toothed, each with 6-12 teeth 1-4 mm, tipped with spines to 1.6-2.8 × 0.2-0.3 mm, apex acute to rounded-obtuse.

absent.

absent.

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

bracteoles membranous, apex acuminate.

racemose, dense, 25-60-flowered, 3-10 cm;

bracteoles membranous, apex obtuse or rounded.

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 and glaucous, oblong-ovoid, 7-10 mm, juicy, solid.

scales 2-3 mm, deciduous.

scales 3-8 mm, deciduous.

= 28.