| 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 |