Craticula is a genus of diatom that lies on or in the top layers of sediments in the freshwater to brackish water environments it inhabits. In addition to frustule morphology the genus differs from closely related species by its sexual reproduction and movement in response to light.
Species According to Algaebase,Craticula at algaebase.org there are 62 species names and 12 intraspecific names: Craticula accomoda (Hustedt) D.G.Mann Craticula accomodiformis Lange-Bertalot Craticula acidoclinata Lange-Bertalot & Metzeltin Craticula ambigua (Ehrenberg) D.G.Mann Craticula angustilancea H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula antarctica B.Van de Vijver & K.Sabbe Craticula australis Van der Vijver, Kopalová & Zindarova Craticula buderi (Hustedt) Lange-Bertalot Craticula citroides H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula citrus (Krasske) Reichardt Craticula coloradensis Edlund, D.R.L.Burge & S.A.Spaulding Craticula cuspidata (Kutzing) D.G.Mann Craticula cuspidata f. tenuirostris A.Cleve-Euler: Invalid Craticula cuspidata var. craticula Aysel: Synonym of Craticula cuspidata (Kutzing) D.G.Mann Craticula cuspidata var. heribaudii (Peragallo) E.Y.Haworth & M.G.Kelly: Synonym of Navicula cuspidata f. heribaudii (Peragallo) A.Cleve Craticula cuspidata var. gracilis (M.Peragallo) Seeligmann, Maidana & Morales Craticula cuspidata var. major (Meister) D.B.Czarnecki Craticula cuspidata var. media (Meister) M.Aboal Craticula dissociata (E.Reichardt) E.Reichardt Craticula ehrenbergii Grunow Craticula elkab (Otto Müller) Lange-Bertalot, Kusber & Cocquyt Craticula frenguellii Metzeltin, Lange-Bertalot & García-Rodríguez Craticula fumantii H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula germainii H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula glaberrima (W.West & G.S.West) B.van de Vijver, K.Kopalová, R.Zidarova & E.J.Cox Craticula guatemalensis (Cleve & E.Grove) Lange-Bertalot Craticula guaykuruorum C.E.Wetzel, E.A.Morales & L.Ector Craticula halopannonica Lange-Bertalot Craticula halophila (Grunow) D.G.Mann Craticula halophila f. robusta (Hustedt) Czarnecki: Synonym of Craticula halophila (Grunow) D.G.Mann Craticula halophila f. tenuirostris (Hustedt) Czarnecki Craticula halophila var. subcapitata (Østrup) D.B.Czarnecki Craticula halophilioides (Hustedt) Lange-Bertalot Craticula hungarica Pantocsek Craticula importuna (Hustedt) K.Bruder & Hinz Craticula johnstoniae L.Bahls Craticula lanceola H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula lange-bertalotii E.Reichardt Craticula lowei Kociolek Craticula megacuspidata (Carlson) Van de Vijver, Kopalová & Zidarova Craticula megaloptera (Ehrenberg) Grunow Craticula minusculoides (Hustedt) Lange-Bertalot Craticula molesta (Krasske) Lange-Bertalot & Willmann: Synonym of Craticula zizix (VanLandingham) Guiry Craticula molestiformis (Hustedt) Mayama Craticula neglecta H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula nonambigua H.Lange-Bertalot; P.Cavacini, N.Tagliaventi & S.Alfinito Craticula obaesa Van der Vijver, Kopalová & Zindarova Craticula orientalis Metzeltin, Lange-Bertalot & Nergui Craticula pampeana (Frenguelli) Lange-Bertalot Craticula paramolesta H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito Craticula perrotettii Grunow Craticula perrotettii var. enervis (Hustedt) B.Hartley: Synonym of Craticula perrotettii Grunow Craticula petradeblockiana Van der Vijver, Kopalová & Zindarova Craticula procera (Ehrenberg) Grunow Craticula regigeorgiensis Zindarova, Kopálova & Van der Vijver Craticula riparia (Hustedt) Lange-Bertalot Craticula riparia var. mollenhaueri Lange-Bertalot Craticula salsuginosa van de Vijver & Beyens Craticula sardiniana L.Bahls Craticula sardiniensis (Lange-Bertalot, Cavacini, Tagliaventi & Alfinito) E.Morales & M.Le Craticula silviae Lange-Bertalot Craticula strelnikoviana E.A.Morales, S.F.Rivera & C.E.Wetzel Craticula subhalophila (Hustedt) Lange-Bertalot Craticula subminuscula (Manguin) Wetzel & Ector Craticula submolesta (Hustedt) Lange-Bertalot Craticula subpampeana B.Van de Vijver & M.Sterken Craticula sverirschopkae Lange-Bertalot Craticula vixnegligenda Lange-Bertalot Craticula vixvisibilis (Hustedt) Lange-Bertalot Craticula vixvisibilis var. distinctior Lange-Bertalot Craticula zizix (VanLandingham) Guiry Craticula zizix var. subdiversa (Messikommer) Guiry
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