1. Morphological and ecological variation across a hybrid zone between Erythronium oregonum and E. revolution (Liliaceae);Allen;MadroUo,1988
2. The genus Erythronium;Anderson;R.H.S. Lily Year Book,1957
3. The genus Erythronium: A taxonomic and distributional study of the western North American species;Applegate;MadroUo,1935
4. 1895. On the development of the bulb of the adder's tongue;Blodgett;Botanical Gazette,1894
5. Vegetative reproduction and multiplication in Erythronium;Blodgett;Bulletin of the Torrey Botanical Club,1900