basis of recordIntegrated Taxonomic Information System (ITIS). , available online athttp://www.itis.gov[details]
additional sourceRound, F.E.; Crawford, R.M.; Mann, D.G. (1990). The diatoms: biology and morphology of the genera. Cambridge University Press: London, UK. ISBN 0-521-363187. 747 pp. (look up in IMIS) [details]