20 
Spring Flora of Oklahoma 
Stamens 2. 
Leaves entire, finely and almost permanently silky. 
4. S. exigua. 
Leaves denticulate, coarsely silky when young, 
glabrate in age. 5. S. interior. 
1. Salix nigra Marsh. Black Willow. A tree, rough, flaky, 
dark brown bark, attaining a height of about 120°. Leaves narrowly 
lanceolate, acute or acuminate at the apex, narrowed at the base, 
often falcate, short petioled, serrulate. Stipules various, persistent 
or deciduous.. Aments expanding with the leaves, on short lateral 
branches, the staminate l'-2' long, the pistillate long and 
spreading in the fruit. Stamens 3-7, distinct. Filaments soft, hairy 
below. Oapsule ovoid, acute, glabrous. 
Along streams and lakes. Common. April-May. 
2. Salix amygdaloides Anders. Peach-leaved Willow. A small 
tree sometimes 70° high, the brown bark scaly. Leaves lanceolate 
or ovate-lanceolate, long-acuminate at the apex, narrowed at the 
base, sharply serrate. Petioles 3"-7" long, glandless. Pistillate 
aments becoming very loose in fruit, 2%'-4' long. Capsule narrowly 
ovoid, acute, glabrous. 
On lakes and river banks. Common. April-May. 
3. Salix Ward! Bebb. Ward’s Willow. A tree sometimes 30° 
high, the branches spreading or drooping, the bark dark reddish- 
brown. Leaves lanceolate or oblong-lanceolate, long-acuminate or 
acute at the apex, rounded, subcordate, or narrowed at the base, 
bright green above, silvery white and somewhat pubescent beneath. 
Stipules often large, sometimes persistent. Aments terminal. Fila¬ 
ments pilose at the base. Capsules conic, glabrous, glandular-gran- 
ulose. 
Along streams and lakes. Common. March-Miay. 
4. Salix exigua Nutt. A shrub or small tree up to 20° high. 
Leaves linear to linear-oblanceolate, small, usually not more than 
3' long and 3" wide, entire, acute at each end. Aments borne on 
lateral, leafy branches, 2' long or less. Capsule silky when young 
and glabrous when mature. 
River and lake shores. April-May. 
5. Salix interior Rowlee. Sandbar or River-bank Willow. A 
much branched shrub, 2°-30° tall. Leaves linear-lanceolate or linear- 
oblong, acuminate, remotely denticulate with somewhat spreading 
teeth. Petioles not glandular. Capsule ovoid-conic, glabrous or 
silky, about 2" long. 
Along streams and lakes. April-May. 
