Flora of North America species comparison

trailing and rooting;

branches yellow-brown or brownish, glabrous;

branchlets yellow-brown, glabrous.

stipules absent or rudimentary;

petiole 4–25 mm, (glabrous or pilose adaxially);

largest medial blade hypostomatous, narrowly elliptic, broadly elliptic, obovate, or very broadly obovate, 19–52 × 10–28 mm, 1–3 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, apex convex, retuse, or rounded, abaxial surface glabrous, pilose or sparsely long-silky to glabrescent, hairs straight or wavy, adaxial slightly glossy, glabrous or pilose;

proximal blade margins entire;

juvenile blade (reddish), very sparsely long-silky abaxially.

abaxial nectary absent, adaxial nectary oblong, 0.6–1 mm;

filaments distinct;

anthers ellipsoid or shortly cylindrical, 0.4–0.6 mm.

adaxial nectary oblong or ovate, 0.7–1.6 mm, equal to or longer than stipe;

stipe 0.5–1.4 mm;

ovary obclavate or pyriform, glabrous, or patchy or streaky pilose or villous, especially on beak, beak gradually tapering to or slightly bulged below styles;

ovules 10–18 per ovary;

styles 0.6–1.8 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.32–0.5–0.68 mm.

4–12 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.

staminate 21–53 × 7–13 mm, flowering branchlet 8–20 mm; pistillate loosely to densely flowered, slender or stout, 32–79 × 7–18 mm, flowering branchlet 4–27 mm;

floral bract brown or black, 1.1–2 mm, apex rounded, entire, abaxially hairy or ciliate, hairs straight.

= 38, 57.