| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Winnapaug Pond (salt or brackish water) which is accessed from Atlantic Ave in Watch Hill (Westerly), RI (marine) |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Benthic, in the mucilage on rocks, the east side of the bridge at Hiley Brook Rd. just north of Lantern Lane, Stow, MA |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Benthic, in the mucilage on rocks, the east side of the bridge at Hiley Brook Rd. just north of Lantern Lane, Stow, MA |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Benthic, in the mucilage on rocks, the east side of the bridge at Hiley Brook Rd. just north of Lantern Lane, Stow, MA |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Benthic, in the mucilage on rocks, the east side of the bridge at Hiley Brook Rd. just north of Lantern Lane, Stow, MA |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Benthic, in the mucilage on rocks, the east side of the bridge at Hiley Brook Rd. just north of Lantern Lane, Stow, MA |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Common in concrete birdbaths |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Common in concrete birdbaths |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Common in concrete birdbaths |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Common in concrete birdbaths |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | Upper Anderson Lake, North Cascades along Hwy 20, Whatcom County, WA |