Hi all, I recently purchased a plant labelled Thal. strecta which turned out to be, to the best of my knowledge, one of the alligator weeds (Alternanthera). Are all species of Alternanthera only semi-aquatic, or are there some true aqautic specimens? Any good books on identifying the different species? TIA Regards, Chris Teichreb Department of Biology University of Regina Regina, Saskatchewan, CANADA teichrch at Meena_CC.URegina.CA