Flora of North America species comparison

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

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

blade oblanceolate or sometimes narrowly elliptic, 1-veined from base, 1.8-7.5 × 0.8-3.3 cm, thin and flexible, base long-attenuate, margins plane, toothed, each with 3-12 teeth 0-1 mm high tipped with bristles to 0.2-1.2 × 0.1-0.15 mm, apex rounded or rounded-obtuse;

surfaces abaxially dull, smooth, adaxially dull, ± glaucous.

3-9-foliolate;

petioles 0.5-4 cm.

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.

present, simple or 3(-7)-fid.

absent.

racemose, lax, 3-12-flowered, 2-5.5 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, oblong-ellipsoid, 10 mm, juicy, solid.

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

scales 1-1.5 mm, deciduous.

scales 3-6 mm, deciduous.

= 28.

= 28.