For Epilobium
Hoch, P.C. 2021c. Epilobium. In Flora of North America Editorial Committee. 2021. Flora of North America north of Mexico. Volume 10, Magnoliophyta: Proteaceae to Elaeagnaceae. Oxford Univ. Press, New York, NY. 456 pp.
Munz, P.A. 1965. Onagraceae. N. Amer. Fl. II. 5: 1-278.
Wagner, W.L., P.C. Hoch, and P.H. Raven. 2007. Revised classification of the Onagraceae. Syst. Bot. Monographs 83: 1-240.
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