{"refrec":{"BRefID":339944,"RR":"<b>Chudaev, D.; Jüttner, I.; Van de Vijver, B.</b> (2021). <i>Fragilaria irregularis</i> sp. nov. a new araphid species (Fragilariaceae, Bacillariophyta) from the River Adegoy, Krasnodar Territory, Russia. <i>Phytotaxa 508(2)</i>. <a href=\"https://dx.doi.org/10.11646/phytotaxa.508.2.11\" target=\"_blank\">https://dx.doi.org/10.11646/phytotaxa.508.2.11</a>","BEntID":336579,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Phytotaxa 508(2)</i>. <a href=\"https://dx.doi.org/10.11646/phytotaxa.508.2.11\" target=\"_blank\">https://dx.doi.org/10.11646/phytotaxa.508.2.11</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Chudaev, D.; Jüttner, I.; Van de Vijver, B.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Chudaev, D.; Jüttner, I.; Van de Vijver, B.","Englishabstract":"During a survey of the diatom flora of the Adegoy River (Krasnodar Territory, Russia), an unknown Fragilaria species (Bacillariophyta) was found that could not be identified using the currently available literature and here we describe it as a new species. The morphology of Fragilaria irregularis sp. nov. was studied using light and scanning electron microscopy and compared to similar species including Fragilaria deformis, F. rinoi, F. septentrionalis and Fragilariforma bicapitata. It differed from these taxa in several characters. Most observed valves showed an irregular striation pattern, a feature not observed in other species. Other important differences include valve outline (linear with parallel margins) and stria density (7–14 in 10 µm, lower compared to all other species). 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