|  | site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | 
| A | Laugarvatn, south Iceland | 599 
  map | Jul 1-Aug 2, 1937 |  |  |  | freshwater | slowly flowing clear brook issuing from a spring near Laugarvatn. | Steinböck O (1948): 26 | 
| B | Derbyshire, United Kingdom | 2138 
  map | 1965-1967 |  |  |  | freshwater | Coldharbour Moor, Derbyshire, Grid Ref. 43095929. | Young JO (1970): 216 | 
| C | Dorpat (Tartu, Terbata, Tartto, Derpt, Yurev, Yur'yev),  Estonia | 2451 
  map | 1913 or earlier |  |  |  | freshwater |  | Graff Lvon (1913): 61 | 
| D | Sudetes Mountains (Sudeten, Sudetic, Sudetska Soustava, Sudety), Germany | 2641 
  map | 1913 or earlier |  |  |  | freshwater | 4 specimens in May, in small Koppenteiche of the Riesengebirges [Poland?]. | Graff Lvon (1913): 67 | 
| E | Kola Peninsula (Halbinsel Kola, Alexandrowsk, Kandalakscha, Kantalahti, Alexandrovsk), Russia | 1263 
  map | 1932 or earlier |  |  |  | freshwater, brackish | damp earth, moss. | Steinböck O (1932): 323 | 
| F | Murmansk (Murmansk Sea Biological Station), Barents Sea, Russia | 303 
  map | prior to 1925 |  |  |  |  |  | Nasonov NV (1925): from Luther 1960 (citation)- p.  99 | 
| G | Sirkka (Sikkola), Finland | 2981 
  map | Jul 9, 1950 |  |  |  |  | brook in forest near Immeljärvi lake. | Luther A (1960): 99 | 
| H | Lohjanjarvi (Lohjanjärvi, Lojo-See, Lojosjö, Lojosee), Finland | 2986 
  map | prior to 1960 |  |  |  |  | Lojo (Lohja) Mongola, ausgetrockneter Frühlingstümpel aug Moräneboden in Erlengebüsch, veil totes, feuchtes Laub, s. S. 95.   Dried spring pool, dead and damp leaves. | Luther A (1960): 99 | 
| I | Tvärminne (Tvarminne), Finnish Bay, Finland | 2842 
  map | Apr 26, 1950 |  |  |  |  | Björkkulla, spring pool on meadow.  Frühlingstümpel aug Wiesenboden. | Luther A (1960): 99 | 
| J | Zoologischen Station Tvärminne (Tvarminne), Hanko (Hango, Hangö), Finnish Bay, Finland | 1378 
  map | Sep 1, 1956 |  |  |  |  | shallow ditch with leaves.  Zoo. Stat. alter, seichter Graben hit veil totem Laub in nassem Birken- und Erlenwald;  totes Laub in kleiner Vertiefung auf Moränenboden (A. L.). | Luther A (1960): 99 | 
| K | Viborg (Viipuri, Wiborg, Vipuri), Leningradskaya Oblast', Russia | 3027 
  map | prior to 1917 |  |  |  |  | Kavantsaari. | Nasonov NV (1917): ; from Luther 1960 (citation)- p. 99 | 
| L | The Mere, Ellesmere, Shropshire, United Kingdom | 3331 
  map | May 1966 - Feb 1967 |  | littoral |  | freshwater | calcium rich lake (35.6 mg/l). | Young JO (1973): 204 | 
| M | Newton Mere, Shropshire, United Kingdom | 3332 
  map | May 1966 - Feb 1967 |  | littoral |  | freshwater | calcium rich lake (7.2 mg/l). | Young JO (1973): 204 | 
| N | Llyn Cwellyn (Quellan), Caernarvonshire (Caernarvon, Carnarvonshire, Arfon), North Wales, United Kingdom | 3340 
  map | Nov 1968 - Oct 1969 |  | littoral |  | freshwater | calcium poor lake (1.7 mg/l). | Young JO (1973): 204 | 
| O | Llyn Ogwen, Caernarvonshire (Caernarvon, Carnarvonshire, Arfon), North Wales, United Kingdom | 3345 
  map | Nov 1968 - Oct 1969 |  | littoral |  | freshwater | calcium poor lake (0.4 mg/l). | Young JO (1973): 204 | 
| P | Idwall, Caernarvonshire (Caernarvon, Carnarvonshire, Arfon), North Wales, United Kingdom | 3349 
  map | Nov 1968 - Oct 1969 |  | littoral |  | freshwater | calcium poor lake (2.0 mg/l). | Young JO (1973): 204 | 
| Q | Mount Elgon on Uganda Kenya border, Africa | 3519 
  map | 1935 or earlier |  |  |  | freshwater | Mt. Elgon on Uganda/Kenya border. | Beauchamp Pde (1936): ; from Young 1976 (citation)- 421 | 
| R | Steiermark (Styria, Styrie), Austria | 1962 
  map | 1923 or earlier |  |  |  | freshwater | Steiermarks. | Steinböck O (1923): 233 | 
| S | Lebrader Teich, Schleswig-Holstein, Germany | 5993 
  map | Oct 14, 1957 |  |  |  |  | Lebrader Moor, in Sphagnum-Bulten (1 Ex.) | Rixen J-U (1961): 485 | 
| T | Lebrader Teich, Schleswig-Holstein, Germany | 5993 
  map | Nov 5, 1957 |  |  |  |  | Lebrader Moor, in Sphagnum-Bulten (6 Ex.) | Rixen J-U (1961): 485 | 
| U | Mountain Lake, Virginia, USA | 1609 
  map | 1939 or earlier |  |  |  |  | Mountain Lake Station. | Ferguson FF, Stirewalt MA, Brown TD, Hayes WJ (1939): from Luther 1960 (citation)- p. 99 | 
| V | Mount Elgon on Uganda Kenya border, Africa | 3519 
  map | 1935 or earlier |  |  |  |  | Afrika, Mount Elgon | Beauchamp Pde (1936): from Luther 1960 (citation)- p. 99 | 
| W | Bulgaria (Bulgarien) | 3874 
  map | 1951 and earlier |  |  |  |  | Bulgarien, | Steinböck O (1927): and Steinböck (citation); from Luther 1960 (citation)- p. 99 | 
| X | Italy (Italien) | 4028 
  map | 1951 or earlier |  |  |  |  | Italien | Steinböck O (1951): and Steinböck (citation); from Luther 1960 (citation)- p. 99 | 
| Y | Scotland (Schottland), United Kingdom | 2155 
  map | 1907 or earlier |  |  |  |  | Schottland. | Martin CH (1907): from Luther 1960 (citation)- p. 99 | 
| Z | Czechoslovakia (Tschechoslovakei) | 3872 
  map | 1926 or earlier |  |  |  |  | Tschechoslovakei. | Sekera E (1926): from Luther 1960 (citation)- p. 99 | 
| A1 | Poland (Polen) | 4037 
  map | 1939 or earlier |  |  |  |  |  | Gieysztor M (1939): from Luther 1960 (citation)- p. 99 | 
| B1 | Steiermark (Styria, Styrie), Austria | 1962 
  map | 1926 or earlier |  |  |  |  | Steiermark, bis über 2.000 m ü.M. | Steinböck O (1926): from Luther 1960 (citation)- p. 99 | 
| C1 | Arnoia River near O Viso, Spain | 6220 
  map | 1997-1999 |  |  |  | Limnetic |  | Noreña C, Damborenea C, Faubel A & Brusa F (2007): 1992, 1993 |