Flora of North America species comparison

of 2d-year stems brown, densely tomentose.

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

blade obovate, 1-veined from base, 1.7-3 × 0.9-1.2 cm, thick and rigid, base acute or acuminate, margins reflexed, undulate, toothed or shallowly lobed, each with 2-4 teeth or lobes 1-3 mm high tipped with spines to 1.2-1.6 × 0.2-0.3 mm, apex obtuse or rounded;

surfaces abaxially glossy, smooth, adaxially glossy, green.

5-9-foliolate;

petioles 1-6 cm.

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.

present, pedately 5-9-fid.

absent.

racemose, rather dense, 10-20-flowered, 3-4 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.

dark purple, spheric, 6-7 mm, juicy, solid.

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

scales 2-4 mm, deciduous.

scales 3-8 mm, deciduous.

= 28.