Flora of North America species comparison

monomorphic, without short axillary shoots.

dimorphic, with elongate primary and short axillary shoots.

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

of 2d-year stems purple, glabrous.

9-21-foliolate;

petioles 2-11 cm.

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.

blades thin and ± flexible;

surfaces abaxially rather dull, smooth, adaxially dull, somewhat glaucous;

terminal leaflet stalked, blade 2.9-8.4 × 1.2-4.8 cm, 1.8-3.2 times as long as wide;

lateral leaflet blades lance-ovate to ovate, 4-6-veined from base, base rounded to cordate, margins plane, toothed, each with 6-13 teeth 1-2(-3) mm tipped with spines to 1-2.4 × 0.1-0.2 mm, apex acute or broadly acuminate.

absent.

present, simple or 1-2-pinnately branched.

racemose, dense, 30-70-flowered, 6-17 cm;

bracteoles membranous, apex acute, obtuse, or rounded.

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

bracteoles membranous, apex acuminate.

anther filaments without distal pair of recurved lateral teeth.

anther filaments without distal pair of recurved lateral teeth.

blue, glaucous, oblong-ovoid or globose, 8-11 mm, juicy, solid.

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

scales (13-)20-44 mm, persistent.

scales 1-2 mm, deciduous.

= 56.