Flora of North America species comparison

of 2d-year stems purple, glabrous.

of 2d-year stems gray, glabrous.

blade narrowly elliptic, 1-veined from base, 1.7-4.6 × 0.6-1.7 cm, thin and flexible, base long-attenuate, margins plane, entire or toothed, each with 3-12 teeth 0-1 mm high tipped with bristles to 0.4-1.4 × 0.1-0.2 mm, apex acute to obtuse or rounded;

surfaces abaxially dull or glossy and smooth, adaxially dull or glossy and not glaucous.

blade obovate to oblanceolate or almost elliptic, 1-veined from base, 2-6(-8) × 0.9-2.8 cm, thin and flexible, base short- to long-attenuate, margins plane, finely serrate, each with (8-)16-30 teeth 0-1 mm high tipped with spines or bristles to 0.6-1.4 × 0.1 mm, apex rounded or obtuse;

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

present, simple or 1-2-pinnately branched.

present, simple or 3-fid.

racemose, lax, 4-15-flowered, 1.5-4.5 cm;

bracteoles membranous, apex acuminate.

racemose, lax, 10-20-flowered, 2-6 cm;

bracteoles membranous, apex acute.

anther filaments without distal pair of recurved lateral teeth.

anther filaments without distal pair of recurved lateral teeth.

red, not glaucous, oblong-ellipsoid, 6-8 mm, juicy, solid.

red or purple, ellipsoid, 10-11 mm, juicy, solid.

scales 1-2 mm, deciduous.

scales 2-3 mm, deciduous.