ring lichen - Encyclopedia of Life
Leave that lichen alone - Fairchild Tropical Botanic Garden
What About the Lichen on My Tree? | New Mexico State University - BE BOLD. Shape the Future.
Lichen Habitat
Lichen: Cute and fuzzy, but also a serious problem | Bladen Journal
Lichen, Algae, and Moss on Trees | University of Maryland Extension
Country diary: goldeneye lichen's quiet resurgence | Environment | The Guardian
About Lichens
Should You Worry About Lichen Growth On Your Trees?
Nature Moments: Lichen Partnerships - Maine Audubon
Unusual lichen do not damage plant hosts | Mississippi State University Extension Service
 "The lowdown on lichens | Forest Preserve District of Will County")
The lowdown on lichens | Forest Preserve District of Will County
Lichens - Pictured Rocks National Lakeshore (U.S. National Park Service)
Lungwort
Two's Company, Three's a Lichen? - The New York Times
TALKING GARDENING with DOUG - Lichen - The Great Big Greenhouse Gardening Blog
Garden Q&A: Lichens are more noticeable in winter, but aren't plant killers
Moss or Lichen? - The Great Bay National Estuarine Research Reserve (GBNERR)
Moss and Lichen: Wait, what's the difference? - Canadian Museum of Nature
Leafless branches reveal non-threatening lichen | Mississippi State University Extension Service
Lichens: More Complex Than Anyone Imagined - Laidback Gardener
Lichens and People: Uses, Benefits, and Potential Dangers - Owlcation
Lichen - Wikipedia
Lichens of the Arctic (U.S. National Park Service)
Live Lichen 100% Organic 2 Grams Terrarium, Plant Décor, Wall Art Not Preserved Tree Lichens - Etsy
