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Plants for North American Gardens. Timber Press. pp. 335–336. ISBN 978-0-88192-760-3. "Salvia lyrata". IPNI Database. International Plant Names Index....

Plants for North American Gardens. Timber Press: Portland, 2006. ISBN 978-0-88192-760-3. Armitage, Allan M. Armitage's Garden Annuals: A Color Encyclopedia...

North American Gardens.Timber Press, 2006 ISBN 0-88192-760-0 ISBN 978-0-88192-760-3 Dezhi, Fu; Robinson, Orbélia R. (2001): 19. Aquilegia. In: Wu, Z....

Armitage's Native Plants for North American Gardens. Timber Press. ISBN 9780881927603. Armitage, Allan M. (2008). Herbaceous Perennial Plants: A Treatise...