There are two varieties of Lithocarpus densiflorus: var. echinoides is a shrub that is a component of chaparral communities, and var. densiflora is a tree form which grows in mixed coastal evergreen forest communities. Contact your local Natural Resources Conservation Service (formerly Soil Conservation Service) office for more information. Look in the phone book under ”United States Government.” The Natural Resources Conservation Service will be listed under the subheading “Department of Agriculture.”