four-leaf milkweed
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Gentianales
- family: Apocynaceae
- genus: Asclepias
- species: Asclepias quadrifolia
Cabin John
Maryland- Cinnaminson
- Riverton
New Jersey- Herkimer
- Mohawk
- West Point
New York- Jefferson
North Carolina- Hometown
Pennsylvania- Purcellville
Virginia
United States