429 Desmazières Rorschach (Sankt Gallen) Switzerland : Wartmann & Schenk 341 : Gomphonema acuminatum Ehrenberg Rorschach (Sankt Gallen) Switzerland : Wartmann & Schenk 341 : Gomphonema constrictum Ehrenberg Rorschach (Sankt Gallen) Switzerland : Wartmann & Schenk 341 : Navicula gracilis Ehrenberg Rorschach (Sankt Gallen) Switzerland : Wartmann & Schenk 341 : Synedra biceps v. recta Kützing Rosenberg, see Gross Lassowitz (Opole) Poland : Rabenhorst 2206; see Grunowitz (Opole) Poland : Rabenhorst 2207 Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Achnanthidium cryptocephalum Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Achnanthidium flexellum Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Amphora ovalis Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Cymbella alp trade Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Cymbella gracilis Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Cymbella smithii Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Denticula elegans Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Denticula elegans v. minor Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Epithemia gibba Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Eunotia arcus Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Gomphogramma rupestre Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Gomphonema capitatum Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Gomphonema dichotomum Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Navicula elliptica Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Nitzschia tenuis v. media Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Odontidium hiemale v. mesodon Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Plejontosigma spenceri Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Synedra splendens Rosenlau (Bern) Switzerland : Rabenhorst 2372 : Tetracyclus braunii Grunow Röskilde, see Lethraborg (Copenhagen) Denmark : Rabenhorst 2351 Roslagen (Stockholm) Sweden : Cleve & Möller 45 : Epithemia turgida (Ehrenberg) Kützing Roslagen (Stockholm) Sweden : Cleve & Möller 45 : Rhabdonema minutum Kützing Roslin (Lothian) Scotland : Van Heurck 129 : Achnantrae trinodis Grunow Roslin (Lothian) Scotland : Van Heurck 129 : Cymbella delicatula Kützing Roslin (Lothian) Scotland : Van Heurck 129 : Cymbella helvetica v. [unnamed] Roslin (Lothian) Scotland : Van Heurck 129 : Navicula falaisensis v. lanceola Grunow Roslin (Lothian) Scotland : Van Heurck 129 : Navicula obtusa v. diminuta Grunow Roslin (Lothian) Scotland : Van Heurck 129 : Navicula zellensis Grunow Roslin (Lothian) Scotland : Van Heurck 129 : Nitzschia denticula Roslin (Lothian) Scotland : Van Heurck 129 : Nitzschia sinuata Rossendorf (Dresden) GDR : Rabenhorst 2534 : Pinnularia acuta Rostock (Rostock) GDR : Hauck & Richter 350 : Melosira varians C. Agardh Rostock (Rostock) GDR : Hauck & Richter 400 : Meridion circulare C. Agardh Rostock (Rostock) GDR : Hauck & Richter 400 : Meridion circulare C. Agardh f. elongata Rabenhorst Rostock) GDR :: see Heringsdorf, Roggensdorf, Rostock, Rügen Rothenberg, Kreis, see Jentendorf (Dresden) GDR : Rabenhorst 1954; see Quitzdorf (Dresden) GDR : Rabenhorst 1954 Rothschloss (Wrocław) Poland : Rabenhorst 1029 : Cymatopleura solea W. Smith Rothschloss (Wrocław) Poland : Rabenhorst 1029 : Pleurosigma lacustre W. Smith Rothschloss (Wrocław) Poland : Rabenhorst 1029 : Surirella solea Rothschloss, see also Nimitzsch, Kreis (Wrocław) Poland : Rabenhorst 1029 Rotoaira Lake (Auckland) New Zealand : Kneiff & Hartmann 2046 : Cyclotella stelligera Cleve & Grunow Rotorua Lake (Auckland) New Zealand : Cleve & Möller 290 : Surirella contorta Kitton Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Cocconeis placentula Ehrenberg Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Cyclotella meneghiniana v. stelligera Cleve & Grunow Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Encyonema turgidum (Gregory) [Grunow] Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Epithemia sorex Kützing Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Eunotia camelus Ehrenberg Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Eunotia didon Ehrenberg Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Eunotia ophidocampa Cleve Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Gomphonema clavatum Ehrenberg v. [unnamed] Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Melosira crenulata Kützing Rotorua Lake (Auckland) New Zealand : Cleve & Möller 300 : Melosira punctata W. Smith