Willow Identification Key: Salix alba
Common Name:
White willowScientific Name:
Salix albaNew Zealand Clones:
Technical Description:
Large tree to 20 m tall;
Twigs golden yellow to orange, brittle or sometimes flexible; branchlets spreading, golden yellow to dark brown, glabrous with age
Leaves dark green and shiny above, white-glaucous beneath, glabrous to sparsely sericeous beneath, lanceolate to narrowly lanceolate, acuminate and often symmetric at the tip, cuneate at the base, mostly 4-10 cm long, 1-2.5 cm wide, serrate, mostly with 7-10 glandular teeth per cm of margin
Petioles glandless or with minute vestiges of glands at the summit, 0.5-1.5 cm long; stipules caducous, lanceolate, entire, 2-4 mm long, sericeous
Catkins appearing with the leaves
Female catkins 3-6 cm long, on leafy branchlets 1-3(5) cm long
Bracts yellowish-green to pale yellow, early deciduous, pubescent, ciliate at the tip
Stamens: 2
Capsules: ovoid-conic, 3.5-5 mm long, glabrous, nearly sessile or on
Stipes: to 1 mm long.
Comments: Forms white rootlets in water.
(from Aquatic and Wetland Vascular Plants of the Northern Great Plains Northern Prairie Wildlife Research Center.)