Manfreda virginica

Manfreda virginica (L.) Salisb. ex Rose.
Engl.: American aloe, false aloe, rattlesnake's master.
Bot. syn.: Agave lata Shinners, Agave tigrina (Engelm.) Cory, Agave virginiana L., Agave virginica L., Allibertia intermedia Marion, Manfreda tigrina (Engelm.) Small, Polianthes lata (Shinners) Shinners, Polianthes virginica (L.) Shinners.