| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Halibut Point, Cape Ann, MA (marine) |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Halibut Point, Cape Ann, MA (marine) |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Halibut Point, Cape Ann, MA (marine) |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Halibut Point, Cape Ann, MA (marine) |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Halibut Point, Cape Ann, MA (marine) |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium; with Stigonema |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium |
| Order: | Nostocales |
| Family: | Scytonemataceae |
| Ecology: | Algonquin Peak, North Elbe, NY; on Racomitrium |