Lichen is a natural part of the landscape
Lichen Habitat
Lichens of the Arctic (U.S. National Park Service)
Lichens
Gardening Myths: Lichens Kill Trees | Home & Garden Information Center
FS1205: Tree-Dwelling Lichens (Rutgers NJAES)
Wolf Lichen: Wallpaper Of The World's Forests | Montana Natural History Center
What's Not to Lichen? They only exist due to mutualistic symbiosis.
Lichen, Algae, and Moss on Trees | University of Maryland Extension
14 Lichen activity ideas – Childsplayabc ~ Nature is our playground
 "The lowdown on lichens | Forest Preserve District of Will County")
The lowdown on lichens | Forest Preserve District of Will County
Lichens - Australian Plant Information
FS1205: Tree-Dwelling Lichens (Rutgers NJAES)
Trumpet Lichen - EPOD - a service of USRA
Lichen On Your Trees: Good or Bad? - LAM Tree Service - Evergreen, CO
I'm Just Not Lichen It
Mariton: I Don't Just Love'em - I Lichen - Natural Lands
Lichen - Wikipedia
Reindeer lichen | Description, Adaptations, Uses, & Facts | Britannica
How to get rid of Lichen | Kings Plant Doctor
Lungwort lichen (Lobaria pumonaria) – Inanimate Life
Lichen Biology
Lichen Habitat
Lichen on trees may be a sign of decline, but it's not the lichen's fault
TALKING GARDENING with DOUG - Lichen - The Great Big Greenhouse Gardening Blog
