Flora of North America species comparison

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

of 2d-year stems grayish or brownish purple, 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.

3-5(-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, simple or 3(-7)-fid.

absent.

racemose, lax, 3-12-flowered, 2-5.5 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.

red, oblong-ellipsoid, 10 mm, juicy, solid.

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

scales 1-1.5 mm, deciduous.

scales 2-3 mm, deciduous.

= 28.