= nonnative, planted and a wildland component, commonly "escapes" cultivation
= nonnative, planted, generally not considered a wildland component or invasive
= a North American native, may naturalize outside its native range
Genus: Hydrangea
    Hydrangea anomala - climbing hydrangea
    Hydrangea arborescens - wild hydrangea
    Hydrangea macrophylla - bigleaf hydrangea
    Hydrangea paniculata - panicle hydrangea
    Hydrangea quercifolia - oakleaf hydrangea