| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |
| Order: | Nostocales |
| Family: | Rivulariaceae |
| Ecology: | From the top of a rock submersed just off-shore in the Hudson River, Campsite Rd., Newcomb, NY |