''Rubus plexus'' is rare North American species of brambles in the Rosaceae, rose family. It has been found only in the Commonwealth (state) of Virginia in the eastern United States. The genetics of ''Rubus'' is extremely complex, so that it is difficult to decide on which groups should be recognized as species. There are many rare species with limited ranges such as this. Further study is suggested to clarify the taxonomy.Flora of North America, ''Rubus'' Linnaeus, 1754. Bramble
/ref>

References

Rubus, plexus Plants described in 1941 Flora of Virginia {{Rubus-stub