Flora of North America species comparison

monomorphic, without short axillary shoots.

± dimorphic, with elongate primary and short or somewhat elongate axillary shoots.

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

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

9-21-foliolate;

petioles 2-11 cm.

5-9(-11)-foliolate;

petioles 0.2-0.8(-3) cm.

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.

blades thick and rigid;

surfaces abaxially dull, papillose, adaxially dull, glaucous;

terminal leaflet stalked in most or all leaves, blade 1-2.6(-4) × 0.7-1.8(-2.5) cm, 1-2.5 times as long as wide;

lateral leaflet blades elliptic to ovate or orbiculate, 1-3-veined from base, base obtuse or truncate, margins strongly crispate, toothed or lobed, with 2-5 teeth 2-6 mm high tipped with spines to 0.8-2.2 × 0.2-0.3 mm, apex obtuse to acuminate.

absent.

absent.

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

bracteoles membranous, apex acute, obtuse, or rounded.

racemose, lax, 3-6-flowered, 2.5-6.5 cm;

bracteoles membranous, apex acuminate.

anther filaments without distal pair of recurved lateral teeth.

anther filaments with distal pair of recurved lateral teeth.

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

yellow or red to brown, ± glaucous, spheric, 12-18 mm, dry, inflated.

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

scales 2-4 mm, deciduous.

= 56.