This is a preliminary key. It has not yet been tested in the field at Rock Creek Park. The key will be tested at a later date and may be revised to facilitate use and accuracy of assigning correct association names to field points. Therefore, if one is on upland terrain in the park the vegetation is most likely to be of this type. Ampelopsis brevipedunculata Shrubland 2a.
Evergreen component is Virginia pine.
Forest Association 2b. On floodplain or stream banks. Platanus occidentalis - Fraxinus pennsylvanica Forest 5b. Not restricted to stream courses. Mesic to seasonally wet soils.