Costaricia werckleana - Specimen list for Manual de Flora de Costa Rica. www.mobot.org/manual.plantas/052667/S052674.html
Dennstaedtia - Key to species in Papuasia. www.anbg.gov.au/projects/fern/taxa/dennstaedtia.html
Dennstaedtia - Species list for "Manual de Flora de Costa Rica" with links to specimen lists. www.mobot.org/manual.plantas/052667/G052677.html
Dennstaedtia bipinnata - in Atlas of Florida Vascular Plants. www.plantatlas.usf.edu/main.asp?plantID=801
Dennstaedtia cicutaria - Accession data from Ecology and Evolutionary Biology Conservatory, University of Connecticut. florawww.eeb.uconn.edu/acc_num/200000051.html
