Lichen Illustrations
By Alexander Mikulin (mag@proaxis.com)Pilophorus nigricaulis
Back to Illustrations
United States Forest Service
National Lichens & Air Quality Database and Clearinghouse
- Home
- Database Queries
- Element Analysis Thresholds & Sensitivity Ratings
- Reports, Publications, Protocols
- Lichen Images
- Fun with Lichens and Air Quality: Projects & Ideas
- Links to Other Resources
- Lichens and Air Quality Workgroup
-
Air Program Contacts
Back to Illustrations