Flora of North America species comparison

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

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

blade obovate to spatulate, 1-veined from base, (0.5-)1.2-2.4 × 0.3-1(-1.8) cm, thin and flexible, base long-attenuate, margins plane, entire, apex rounded or obtuse;

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

(3-)5-7-foliolate;

petioles (1-)3-9 cm.

blades thin and flexible;

surfaces abaxially dull, papillose, adaxially dull, rarely glossy, somewhat glaucous;

terminal leaflet stalked, blade 3.2-9.5 × 2.3-6 cm, 1.2-2.2(-2.5) times as long as wide;

lateral leaflets ovate or elliptic, 1(-3)-veined from base, base rounded to obtuse or truncate, margins plane, toothed, with 6-24 teeth 0.5-3 mm tipped with spines to 0.6-2.8 × 0.1-0.25 mm, apex rounded, rarely obtuse or even broadly acute.

present, simple or 3-fid.

absent.

umbellate, 1-5-flowered, 1-1.5 cm;

bracteoles membranous, apex acute.

racemose, dense, 25-50-flowered, 3-10 cm;

bracteoles membranous, apex rounded to obtuse or broadly acute.

anther filaments without distal pair of recurved lateral teeth.

red, ellipsoid or spheric, (7-)9-10 mm, juicy, solid.

blue, glaucous, oblong-ovoid, 6-10 mm, juicy, solid.

scales 1-2 mm, deciduous.

scales 3-8 mm, deciduous.

filaments with distal pair of recurved lateral teeth.

= 28.