Leaves are deciduous, simple, alternate, simple, oblanceolate to lanceolate, 3-4" long, about 3/4" wide, serrated margins, medium green upper surface, lower whitish color, at least early in the season. Stipules often present.
Flowers are dioecious, in clusters, or catkins, males are yellowish and mostly stamens, coming out slightly before the foliage.
Females also in catkins, but held upright. These have already been pollinated but you can see the remnants of the style.
Stems are yellow brown, flower buds larger that vegetative buds. Bark can be rough or smooth.
Misidentification:
Other willows. Can't say this is my favorite group, so I don't know them all that well.
Location:
Aptos
Mar Vista Dr. On the right hand side of the street before you reach the trailer park. You might find some at the nursery at the end of the street.