It is the sole species in the genus Cliftonia .
Cliftonia monophylla , the buck - wheat tree , buckwheat tree or black titi , is a tree native to the southeastern United States .
Cliftonia monophylla is the sole Cliftonia monophylla in the genus Cliftonia monophylla .
Cliftonia monophylla , the buck - wheat tree , buckwheat tree or black titi , is a tree native to the southeastern United States .