Everywhere, deciduous, exceedingly variable, three to eight feet high.
Negundo Aceroides Mœnch. Box-Elder.
A medium sized tree, twenty to thirty feet high; common among the Oakland hills, on banks of creeks.
Acer macrophyllum Pursh. Large-Leaved Maple.
Common on the banks of Walnut Creek, N.W. of Mount Diablo; fifty to seventy feet high, and two to five feet in diameter, in light sandy soil.
Æsculus Californica Nutt. Horse-Chestnut.
Mostly a shrub, seldom a medium sized tree, largest on the banks of creeks and moist hill sides; grows commonly in groups. Common.
Euonymus Occidentalis Nutt. Spindle-Tree.
A shrub seven to fifteen feet high, with slender upright branches; in swampy places, near the head of Tomales Bay; rare.