Columbia subject headings:
Endangered plants--North Carolina--Geographical distribution--Maps.
Endangered plants--North Carolina.
Endangered plants--Virginia--Geographical distribution--Maps.
Endangered plants--Virginia.
Mountain plants--North Carolina.
Mountain plants--Virginia.
Harvard subject headings:
Endangered species--North Carolina.
Endangered species--Virginia.
Rare plants--North Carolina.
Rare plants--Virginia.
Princeton subject headings: