Onagraceae im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
ingentaconnect.com
Alexander N. Sennikov: Chamerion or Chamaenerion (Onagraceae)? The old story in new words. In: Taxon. Band 60, Nr. 5, 2011, S. 1485–1488 (Abstract).
si.edu
repository.si.edu
Warren Lambert Wagner, Peter C. Hoch, Peter H. Raven: Revised Classification of the Onagraceae. in Systematic Botany Monographs, Volume 83, 2007, ISBN 978-0-912861-83-8. Oenothera S. 138 ff. PDF.
tropicos.org
Onagraceae bei Tropicos.org. Missouri Botanical Garden, St. Louis
