North and Central America
| Checklist of Non-Vascular Plants of Grand Canyon National Park, Arizona (listing) | ParkNet, Grand Canyon National Park | |
| Checklist of Great Lakes Diatoms (listing) | University of Michigan, Center for Great Lakes and Aquatic Sciences | |
| Algae recorded from Rodriguez Island (listing) | University of California, Herbarium | |
| Algae recorded from St. Paul Island (listing) |