| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Entrance to East end of the Hoosac Tunnel, Zoar Rd., Florida, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Entrance to East end of the Hoosac Tunnel, Zoar Rd., Florida, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Entrance to East end of the Hoosac Tunnel, Zoar Rd., Florida, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Entrance to East end of the Hoosac Tunnel, Zoar Rd., Florida, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Formerly: | Anacystis rupestris Drouet et Daily |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Aphanothecaceae |
| Ecology: | Dripping calcareous rocks in the Green River Gorge, Leyden, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Rock scraping, small cascade alongside the water reservoir on Bear Swamp Rd., Ashfield, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Small pond on Barlow Mill Rd. near Boston Hollow Rd., Ashford, CT |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Small pond on Barlow Mill Rd. near Boston Hollow Rd., Ashford, CT |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Small pond on Barlow Mill Rd. near Boston Hollow Rd., Ashford, CT |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Small pond on Barlow Mill Rd. near Boston Hollow Rd., Ashford, CT |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Soil bank by the railroad tracks leading to the Bear River, Shelburne Falls, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Soil bank by the railroad tracks leading to the Bear River, Shelburne Falls, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Soil bank by the railroad tracks leading to the Bear River, Shelburne Falls, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Delaney Pond, Stow, MA; Common |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Wet rocks along a calcareous ravine, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Wet rocks along a calcareous ravine, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Wet rocks along a calcareous ravine, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Wet rocks along a calcareous ravine, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Wet rocks along a calcareous ravine, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the Bolton Lime Kiln, Bolton, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the Bolton Lime Kiln, Bolton, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the Bolton Lime Kiln, Bolton, MA |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Dripping rocks at the head of the Great Gulf Trail, near the summit of Mt. Washington, NH |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Chroococcaceae |
| Ecology: | Calcareous rocks in the gorge at Forest Home Park, Ithaca, NY |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Cyanothricaceae |
| Ecology: | Plum Island in mud with Lyngbya aestuarii and at Rough Meadows on side of road off Stackyard Rd. by Parker River National Wildlife Refuge, Rowley, MA; both taxa found together |
| Order: | Chroococcales |
| Family: | Gomphosphaeriaceae |
| Ecology: | Lake Patterson near Winthrop, eastern Washington, Okanogan County, WA |
| Order: | Chroococcales |
| Family: | Gomphosphaeriaceae |
| Ecology: | Lake Goodwin, IWS water quality sampling site, Snohomish County, WA; Common |
| Order: | Chroococcales |
| Family: | Gomphosphaeriaceae |
| Ecology: | Lake Goodwin, IWS water quality sampling site, Snohomish County, WA; Common |
| Order: | Chroococcales |
| Family: | Microcystaceae |
| Ecology: | The Lake in Central Park, NYC |
| Order: | Chroococcales |
| Family: | Microcystaceae |
| Ecology: | The Lake in Central Park, NYC |
| Order: | Chroococcales |
| Family: | Microcystaceae |
| Ecology: | The Lake in Central Park, NYC |
| Order: | Chroococcales |
| Family: | Microcystaceae |
| Ecology: | The Lake in Central Park, NYC |
| Order: | Chroococcales |
| Family: | Stichosiphonaceae |
| Ecology: | Misc. freshwater fish tanks and aquaria, Bellingham area, Whatcom County, WA. Note that some species in this genus may be moved to genus Godlewskia Janczewski |
| Order: | Chroococcales |
| Family: | Stichosiphonaceae |
| Ecology: | Misc. freshwater fish tanks and aquaria, Bellingham area, Whatcom County, WA. Note that some species in this genus may be moved to genus Godlewskia Janczewski |
| Order: | Chroococcales |
| Family: | Stichosiphonaceae |
| Ecology: | Misc. freshwater fish tanks and aquaria, Bellingham area, Whatcom County, WA. Note that some species in this genus may be moved to genus Godlewskia Janczewski |
| Order: | Chroococcales |
| Family: | Stichosiphonaceae |
| Ecology: | Misc. freshwater fish tanks and aquaria, Bellingham area, Whatcom County, WA. Note that some species in this genus may be moved to genus Godlewskia Janczewski |