| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |
| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |
| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |
| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |
| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |
| Order: | Nostocales |
| Family: | Tolypothrichaceae |
| Ecology: | Small pool at the bottom of a cascade along the ralroad tracks leading to the Bear River, Shelburne Falls, MA; common |