Family: Froskebittfamilien (Hydrocharitaceae)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Burudvann | Akershus, Norway | 1 | 1 | 0 | 1991-09-12 | |
| Glitredammen | Akershus, Norway | 7 | 1 | 0 | 2006-12-13 | |
| Grunningen | Innlandet, Norway | 1 | 1 | 0 | 2012-09-20 | |
| Harestuvannet | Akershus, Norway | 2 | 1 | 0 | 2004-09-01 | |
| Jarenvannet | Innlandet, Norway | 2 | 1 | 0 | 1990-08-28 | |
| Jegersborgdammen | Oslo, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1993-09-02 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Nordre Skeisvatn | Rogaland, Norway | 1 | 1 | 0 | 2005-09-16 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Opsangervatnet | Vestland, Norway | 4 | 2 | 0 | 1994-06-03 | |
| skraperudtjern | Oslo, Norway | 1 | 1 | 0 | 2011-09-15 | |
| Årungen | Akershus, Norway | 1 | 1 | 0 | 1991-09-16 | |
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