ISBN 0-8122-4003-0*Gleason, Henry A. and Cronquist, Arthur (1991) "Manual of Vascular Plants of Northeastern United States and Adjacent Canada", Second Edition.
ISBN 0-8122-4003-0* Gleason, Henry A. and Cronquist, Arthur (1991) "Manual of Vascular Plants of Northeastern United States and Adjacent Canada", Second Edition.