5. Urbanland This community is subject to high water tables during the rainy seasons and has limitations for urban development. Water management systems are required for urban uses. It is often difficult to establish vegetation on steep channel side slopes and infertile spoil. Special techniques may be required. Without vegetation, erosion and sedimentation is often a problem in some water management systems. Wind erosion is a problem in unvegetated areas. This is especially severe in the spring. Native plants can be used for beautification and require minimum establishment and maintenance. Some of the trees are cabbage palm, dahoon holly, gumbo-limbo (south Florida), hawthorns, laurel oak, live oak, and thatch palm (south Florida). Some of the shrubs are American beautyberry, coral bean, dahoon holly, marlberry, myrsine, sawpalmetto, tetrazygia, shining sumac, varnish leaf, waxmyrtle, and wild coffee. Some of the herbaceous plants are aster, coneflowers, dayflowers, iris, and sunflower. The most important urban wildlife are songbirds and squirrel. Undisturbed areas provide good escape cover and travel routes for deer, turkey, and similar forms of wildlife. ENDANGERED AND THREATENED PLANTS AND ANIMALS The following endangered or threatened plants are not common in this community but may occur in some instances: TREES Silver thatch palm, Coccothrinax argentata HERBACEOUS PLANTS Adder's tongue fern, Cheiroglossa palma; Auricled spleenwort, Asplenium auritum; cowhorn orchid, Cvrtopodium punctatum, Night-scent orchid, Epidendrum nocturnum; Bird's nest spleenwort, Asplenium serratum The following endangered or threatened wildlife species may be found in or around this community: MAMMALS Everglades mink, Mustela vison evergladensis; Florida panther, Felis concolor coryi BIRDS Caracara, Caracara cheriway auduboni; Bald eagle, Haliaeetus leucocephalus; Wood stork, Mycteria americana REPTILES Eastern indigo snake, Drvmarchon corais couperi