==External links==*Jepson Manual Treatment* USDA plants database*Photo gallery==References==* Niering,W., Olmstead, N., National Audubon Society Guide to North American Wildflowers, Eastern Region,1995, plate 184 and page 573, ISBN 0-394-50432-1
== Синонимика ==== Примечания ==* Niering,W., Olmstead, N., National Audubon Society Guide to North American Wildflowers, Eastern Region,1995, plate 184 and page 573, ISBN 0-394-50432-1* Jepson Manual Treatment* USDA plants database