Flora of North America species comparison

of 2d-year stems brown, densely tomentose.

of 2d-year stems grayish or brownish 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.

3-5(-7)-foliolate;

petioles 0.2-0.7 cm.

blades thin but rigid;

surfaces abaxially dull, papillose, adaxially dull, glaucous;

terminal leaflet stalked in most or all leaves, blade 2.1-4.1 × 0.7-1.1 cm, 3-6 times as long as wide;

lateral leaflet blades lance-ovate or lance-elliptic to lanceolate, 1-veined from base, base obtuse or rounded, margins plane or undulate, toothed, each with 4-11 teeth 0-1 mm high tipped with spines to 0.4-2 × 0.1-0.2 mm, apex acuminate.

present, pedately 5-9-fid.

absent.

racemose, rather dense, 10-20-flowered, 3-4 cm;

bracteoles membranous, apex acuminate.

racemose, lax, 3-8-flowered, 2-5 cm;

bracteoles membranous, apex acuminate, sometimes with proximal bracteoles leathery, spinose-acuminate.

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.

yellowish red to red, not glaucous, spheric, 5-6 mm, juicy, solid.

scales 2-4 mm, deciduous.

scales 2-3 mm, deciduous.