NatureServe:
Red maple seeds in spring
NatureServe:
"Not-so-natural Community" at Harpers Ferry NHP
NatureServe:
River Scour Woodland Natural Community at Harpers Ferry NHP
NatureServe:
River Scour Woodland and Herbaceous Depositional Bar Complexes at Harpers Ferry NHP
NatureServe:
Hemlock Woolly Adelgid
NatureServe:
Wavyleaf aster
NatureServe:
Eastern red-cedar
NatureServe:
Goat's-rue
NatureServe:
Shumard Oak
NatureServe:
Blue mistflower
NatureServe:
Common dittany
NatureServe:
Halberd-leaf rosemallow
NatureServe:
American basswood
NatureServe:
Eastern cottonwood
NatureServe:
Rattlesnake-weed
NatureServe:
Cleavers
NatureServe:
Eastern hemlock
NatureServe:
Black willow
NatureServe:
Late-flowering thoroughwort
NatureServe:
White-flower leafcup
NatureServe:
Trumpet creeper
NatureServe:
Common ninebark
NatureServe:
Clustered black-snakeroot
NatureServe:
Woodland stonecrop
NatureServe:
Dwarf cinquefoil
NatureServe:
Virginia stickseed
NatureServe:
Longleaf summer bluet
NatureServe:
Goat's-rue
NatureServe:
Coralberry
NatureServe:
Chinquapin oak
