| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena circinalis Bornet et Flahault |
| Ecology: | Lake Fazon, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena circinalis Bornet et Flahault |
| Ecology: | Bullard Pond, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena circinalis Bornet et Flahault |
| Ecology: | Lake Fazon, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena crassa Komárková-Legnová & Cronberg |
| Ecology: | Lone Lake, IWS water quality sampling site, Island County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena crassa Komárková-Legnová & Cronberg |
| Ecology: | Heart Lake, IWS water quality sampling site, Skagit County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena crassa Komárková-Legnová & Cronberg |
| Ecology: | Wiser Lake, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena crassa Komárková-Legnová & Cronberg |
| Ecology: | Wiser Lake, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena crassa Komárková-Legnová & Cronberg |
| Ecology: | Heart Lake, IWS water quality sampling site, Skagit County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena ellipsoides Bolochoncev ex Woronichin |
| Ecology: | Lake Patterson near Winthrop, eastern Washington, Okanogan County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena ellipsoides Bolochoncev ex Woronichin |
| Ecology: | Lake Patterson near Winthrop, eastern Washington, Okanogan County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena ellipsoides Bolochoncev ex Woronichin |
| Ecology: | Lake Patterson near Winthrop, eastern Washington, Okanogan County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena flos-aquae Bornet et Flahault |
| Ecology: | Lake Samish, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena flos-aquae Bornet et Flahault |
| Ecology: | Lake Samish, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena flos-aquae Bornet et Flahault |
| Ecology: | Lake Padden, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | Lake Padden, IWS water quality sampling site, Whatcom County, WA; Common |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | Grandy Lake, IWS water quality sampling site, Skagit County, WA; Common |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | Cranberry Lake, IWS water quality sampling site, Island County, WA; Common |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | Lake Shannon, IWS water quality sampling site, Skagit/Whatcom Counties, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | NA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena lemmermannii Richter |
| Ecology: | NA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena planctonica Brunnthaler |
| Ecology: | Lake Padden, IWS water quality sampling site, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena planctonica Brunnthaler |
| Ecology: | Heart Lake, IWS water quality sampling site, Skagit County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena planctonica Brunnthaler |
| Ecology: | Big Lake, IWS water quality sampling site, Skagit County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Ecology: | NA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Ecology: | NA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Ecology: | Heart Lake, IWS water quality sampling site, Heart Lake, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Ecology: | Heart Lake, IWS water quality sampling site, Heart Lake, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena spiroides Klebahn |
| Ecology: | Birch Bay Village Lakes, near Bellingham, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena spiroides Klebahn |
| Ecology: | Birch Bay Village Lakes, near Bellingham, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena spiroides Klebahn |
| Ecology: | Birch Bay Village Lakes, near Bellingham, Whatcom County, WA |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Formerly: | Anabaena spiroides Klebahn |
| Ecology: | Birch Bay Village Lakes, near Bellingham, Whatcom County, WA |