|  | site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | 
| A | Finland (Finnland, Finlyandiya, Finlandia, Finlande, Suomen Tasavalta, Suomi) | 2656 
  map | 1907 or earlier | type locality |  |  | freshwater |  | Graff Lvon (1913): 100 | 
| B | Bologoye (Bologoje), Russia | 2463 
  map | 1906 or earlier | type locality |  |  | freshwater |  | Graff Lvon (1913): 123 | 
| C | Leningrad Province (Sankt-Peterburg, Saint Petersburg), Russia | 3893 
  map | 1926 or earlier |  |  |  |  | Leningrad province. | Nasonov NV (1926): abstract | 
| D | Sodermanland (Södermanland), Sweden | 2930 
  map | 1907 or earlier | default type |  |  |  |  | Hofsten N v (1907): abstract | 
| E | Mästermyr, Gotlands Län, Sweden | 5010 
  map | 1907 or earlier | default type |  |  |  | Ich kenne diese Art teils aus dem See Storsjön in Södermanland, wo ich sie in einer Tiefe von 2-3 m zwischen Conferven und anderen Algen fand, teils auch aus dem Mästermyr. | Hofsten N v (1907): 12 | 
| F | Bologoye (Bologoje), Russia | 2463 
  map | 1906 or earlier | default type |  |  |  |  | Plotnikow W (1906): abstract | 
| G | Saint Blaise, Switzerland | 3931 
  map | 1906 or earlier |  |  |  | freshwater | Loclat (Lac de St-Blaise) bei Neuchatel. | Thiébaud M (1906): from Hofsten 1912 (citation)- p. 615 | 
| H | Sodermanland (Södermanland), Sweden | 2930 
  map | 1907 or earlier |  | 2-3 m |  |  | Ich kenne diese Art teils aus dem See Storsjön in Södermanland, wo ich sie in einer Tiefe von 2-3 m zwischen Conferven und anderen Algen fand, teils auch aus dem Mästermyr. | Hofsten N v (1907): 12 | 
| I | Tvärminne (Tvarminne), Finnish Bay, Finland | 2842 
  map | 1955 or earlier |  |  |  |  | "Bisher bloss in sehr schwach brackischem Wasser im Anschluss an den Finnischen Meerbusen gefunden" | Luther A (1955): 236;  from Ax 2008 (citation)- p. 634 | 
| J | Selenter See, near Giekau, Schleswig-Holstein, Germany | 6015 
  map | Sep 3, 1957 |  |  |  |  | Selenter See bei Giekau, zwischen angetriebenen Pflanzenteilen (1 Ex.) | Rixen J-U (1961): 497 | 
| K | Pohjanlahti (Pojo Wiek, Pojowiek, Pojoviken, Pohjanpitäjanlahti), Finland | 5465 
  map | 1955 or earlier |  |  |  | brackish | Bisher bloss in sehr schwach brackischem Wasser im Anschluss an den Finnischen Meerbusen gefunden; Pojo, innerster Teil der Pojo-Wiek (Salzgehalt etwa 0.7 - 0.5 º/ºº). | Luther A (1955): 236 | 
| L | Gumnäs, Pohja, Finland | 5935 
  map | 1955 or earlier |  |  |  | brackish | Bisher bloss in sehr schwach brackischem Wasser im Anschluss an den Finnischen Meerbusen gefunden; Gumnäs-Einfahrt. | Luther A (1955): 236 | 
| M | Åminnefors (Åminne), Finland | 5721 
  map | 1955 or earlier |  |  |  | brackish | Bisher bloss in sehr schwach brackischem Wasser im Anschluss an den Finnischen Meerbusen gefunden; Åminne gegenüber, zwischen Wassermoosen, Ceratophyllum demersum, u. Cladophora aegagropila; | Luther A (1955): 236 | 
| N | Lappohja (Lappvik), Finnish Bay (Finnischen Meersbusen), Finland | 887 
  map | 1955 or earlier |  |  |  |  | Tväriminne, in einer Lagune halbwegs zwischen Lappvik u. der Brücke von Synodalen, Aug (Probe von Hans Luther; A.L.) | Luther A (1955): 236 | 
| O | Gvardeyskoye (Гвардейское, Karisalmi), Russia | 5685 
  map | 1917 or earlier |  |  |  |  | Karisalmi bei Viborg (Viipuri), Seen Salojärvi u. Tervalampi. | Nasonov NV (1917): from Luther 1955 (citation)- p. 236 | 
| P | Viborg (Viipuri, Wiborg, Vipuri), Leningradskaya Oblast', Russia | 3027 
  map | 1917 or earlier |  |  |  |  | Karisalmi bei Viborg (Viipuri), Seen Salojärvi u. Tervalampi. | Nasonov NV (1917): from Luther 1955 (citation)- p. 236 | 
| Q | Salojärvi, Finland | 5826 
  map | 1917 or earlier |  |  |  |  | Karisalmi bei Viborg (Viipuri), Seen Salojärvi u. Tervalampi. | Nasonov NV (1917): from Luther 1955 (citation)- p. 236 | 
| R | Tervalampi, Finland | 6981 
  map | 1917 or earlier |  |  |  |  | Karisalmi bei Viborg (Viipuri), Seen Salojärvi u. Tervalampi. | Nasonov NV (1917): from Luther 1955 (citation)- p. 236 | 
| S | Leningrad Province (Sankt-Peterburg, Saint Petersburg), Russia | 3893 
  map | 1921 or earlier |  |  |  |  | Umgeb. v. Leningrad in Seen u. Teichen sowie in kleinen Becken mit stehendem Wasser am Ufer der Nevabucht, also wohl in stark ausgesüsstem Wasser des Finnischen Meerbusens, wie Finnland. | Beklemischev VN (1921): from Luther 1955 (citation)- p. 236 | 
| T | Nevskaya Guba (Nevskaja Guba, Neva Bay, Gulf of Kronstadt, Nevabucht), Russia | 6925 
  map | 1921 or earlier |  |  |  |  | Umgeb. v. Leningrad in Seen u. Teichen sowie in kleinen Becken mit stehendem Wasser am Ufer der Nevabucht, also wohl in stark ausgesüsstem Wasser des Finnischen Meerbusens, wie Finnland. | Beklemischev VN (1921): from Luther 1955 (citation)- p. 236 | 
| U | Velikiy Novgorod (Nowgorod), Russia | 5750 
  map | 1906 or earlier |  |  |  |  | Gouv. Novgorod, See Bologoje. | Plotnikow W (1906): from Luther 1955 (citation)- p. 236 | 
| V | Bologoye (Bologoje), Russia | 2463 
  map | 1906 or earlier |  |  |  |  | Gouv. Novgorod, See Bologoje. | Plotnikow W (1906): from Luther 1955 (citation)- p. 236 | 
| W | Ivanovo (Ivanovo-Vosnesensk, Ivanovo-Voznesensk, Ivanovo-Vosnessensk Иваново, Iwanowo), Russia | 5751 
  map | 1923 or earlier |  |  |  |  | Gouv. Ivanovo Voznesensk, See Valdajskoje. | Cordé WJ (1923): from Luther 1955 (citation)- p. 236 | 
| X | Valdajsjøen (See Valdajskoje), Russia | 6982 
  map | 1923 or earlier |  |  |  |  | Gouv. Ivanovo Voznesensk, See Valdajskoje. | Cordé WJ (1923): from Luther 1955 (citation)- p. 236 | 
| Y | Kirov (Wjatka, Киров, Khlynov , Kirow, Viatka, Vyatka, Vjatka), Russia | 5792 
  map | 1921 or earlier |  |  |  |  | Vjatka | Nasonov NV (1921): from Luther 1955 (citation)- p. 236 | 
| Z | Perm (Perm'), Russia | 5839 
  map | 1921 or earlier |  |  |  |  | Perm | Beklemischev VN (1921): from Luther 1955 (citation)- p. 236 | 
| A1 | Orenburg (Оренбург, Chkalov, Tschkalow), Russia | 5794 
  map | 1922 or earlier |  |  |  |  | Orenburg. | Beklemischev VN (1922): from Luther 1955 (citation)- p. 236 | 
| B1 | Volga Delta (Wolga), Russia | 6983 
  map | 1926 or earlier |  |  |  |  | Wolga-Delta | Beklemischev VN (1926): from Luther 1955 (citation)- p. 236 | 
| C1 | Kurmark, Germany | 3468 
  map | 1942 or earlier |  |  |  |  | Kurmark. | Weise M (1942): from Luther 1955 (citation)- p. 236 | 
| D1 | Jezioro Wigry (Wigrysee, Wigry See, Wigry lake), Poland | 4999 
  map | 1939 or earlier |  |  |  |  | Charawiesen u. Lemna-Tümpel. | Gieysztor M (1939): from Luther 1955 (citation)- p. 236 | 
| E1 | Podlasie, Poland | 6923 
  map | 1939 or earlier |  |  |  |  |  | Gieysztor M (1939): from Luther 1955 (citation)- p. 236 | 
| F1 | Lac de Neuchatel (Neuenburger See, Neuenburg, Neuenburgersee, Neuchâtel), Switzerland | 2751 
  map | 1912 or earlier |  |  |  |  |  | Hofsten N v (1912): from Luther 1955 (citation)- p. 236 | 
| G1 | Kärnten (Bundesland Kärnten, Carinthia, Carinzia, Koruska, Koroska) on the Wörthersee , Austria | 1382 
  map | 1933 or earlier |  |  |  |  |  | Reisinger E, Steinböck O (1925): and Findenegg 1933 (citation);  from Luther 1955 (citation)- p. 236 | 
| H1 | Wörther See (Wörthersee), Kärnten, Austria | 5002 
  map | 1933 or earlier |  |  |  |  |  | Reisinger E, Steinböck O (1925): and Findenegg 1933 (citation);  from Luther 1955 (citation)- p. 236 | 
| I1 | Gardasee (Lago di Garda), Italy | 5912 
  map | 1932 or earlier |  |  |  |  |  | Steinböck O (1932): from Luther 1955 (citation)- p. 236 | 
| J1 | Lago di Loppio, Trentino, Italy | 6984 
  map | 1932 or earlier |  |  |  |  | Loppiosee. | Steinböck O (1932): from Luther 1955 (citation)- p. 236 | 
| K1 | Lake Vrana (Vransko jezero), Cres (Cherso, Crepsa, Kersch), )Croatia | 6985 
  map | 1925 or earlier |  |  |  |  | Vrana-See auf d. Insel Cherso. | Reisinger E, Steinböck O (1925): from Luther 1955 (citation)- p. 236 |