| site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | |
|---|---|---|---|---|---|---|---|---|---|
| A | Nowaja Semlja, Serebryanka Guba, Russia | 2889 | 1932 or earlier | freshwater | Steinböck O (1932): 319 | ||||
| B | Andrew Bay, Alaska | 5968 | Aug-Sep, 1954 | default type | freshwater | collected in the interior of St. Andrew's Island in the Bering Sea, in fresh-water pools, on wet tundra, and in vegetation along streams. | Hyman LH (1957): 2 | ||
| C | Kilpisjarvi (Kilpisjärvi), Finland | 3031 | Jul 7, 1950 | Kilpisjärvi, Saanatunturi, W vom Gipfel, eiskalter Tümpel, ca 800 m ü.M. | Luther A (1963): 121 |