Flora of North America species comparison

branches (sometimes ± brittle at base), yellow-brown or olive-brown, not or weakly glaucous, glabrous;

branchlets yellow-brown or olive-brown, violet tinged, glabrous.

(sometimes opposite or subopposite);

stipules absent;

petiole shallowly grooved adaxially, 2–7 mm, glabrous adaxially;

largest medial blade lorate, narrowly oblong, narrowly oblanceolate, oblanceolate, 35–77 × 5–20 mm, base convex or rounded, margins strongly revolute, entire or serrulate, apex acute, acuminate, or convex, abaxial surface glaucous, glabrous, adaxial dull to sublustrous, glabrous;

proximal blade margins entire;

juvenile blade yellowish green or reddish, glabrous or sparsely pubescent abaxially, hairs white, sometimes also ferruginous.

adaxial nectary oblong, square, or ovate, 0.4–0.8 mm;

filaments connate;

anthers (distinct), purple turning yellow, ellipsoid or globose, 0.4–0.5 mm.

adaxial nectary ovate, 0.3–0.7 mm;

ovary obturbinate, beak gradually tapering to styles;

ovules 6 per ovary;

styles 0.2–0.3 mm.

2.5–5 mm.

humboldtiana Willdenow: Humboldt willow is not known to occur in the flora area.

is characterized by: trees, 4–25 m;

branches highly brittle at base, bud-scale margins distinct and overlapping adaxially;

stipules on late leaves rudimentary or foliaceous;

largest medial leaf blade usually linear, abaxial surface not glaucous, adaxial dull;

pistillate bract deciduous after flowering;

stamens 3–7;

capsules with distinct, often raised, white veins.;

it occurs throughout much of Mexico to central Chile.

flowering before leaves emerge, (subopposite, recurved);

staminate stout or subglobose, 25–33 × 6–10 mm, flowering branchlet 0 mm;

pistillate densely flowered, slender or stout, 13.5–34.5(–35 in fruit) × 3–7 mm, flowering branchlet 0.5–3 mm;

floral bract black or bicolor, 0.8–1.6 mm, apex rounded, abaxially hairy, hairs straight or wavy.

= 38.