. "2010-07-15T12:42:09-0500" . . "GeoSpecies Knowledge Base Page: Species Ceratophyllum echinatum A. Gray" . "Ceratophyllum echinatum A. Gray" . . . . . . "Peter J. DeVries" . . "http://lod.geospecies.org/ses/fRsLi.html" . . . "en" .