The Wonderful World of Lichens – The Dawes Arboretum – July 17, 2022

Foliose Lichens on Yew Branch, Secrest Arboretum, Ohio

Lichens cover 6-8% of the Earth’s land surface, but most people are unfamiliar with these life forms, which attach themselves to rocks, tree bark, or soil. A lichen is a combination of a fungus and either an alga or a cyanobacterium, and more than 15,000 species of lichens have been identified worldwide, including 3,600 in North America and more than 600 kinds of lichen in Ohio.  

Greenland Bear Spider on Map Lichen and Orange Boulder Lichen, Mount Washington, New Hampshire

If you would like to learn more about lichens, join us on Sunday, July 17, 2022 for a 3-hour Introduction to Lichens workshop at The Dawes Arboretum, near Newark, Ohio.

Crustose, Foliose, & Fruticose Lichens on Dogwood, Vinton County, Ohio

We’ll begin the workshop with a 45- to 60-minute slide program that will cover basic information on lichens, their structure, how they live and reproduce, where to find them, essential equipment for lichen observation and identification, and tips on collecting and photographing lichens in the field. Joining us will be professional lichenologist Ray Showman, co-founder of the Ohio Moss & Lichen Association (OMLA). Following the slide program, we will explore the Arboretum grounds for two hours to find and identify a variety of lichens.   

OMLA Members Examine Lichens in the Hocking Hills, Ohio

Participants will receive a free copy of the Ohio Division of Wildlife brochure, Common Lichens of Ohio Field Guide, written by Ray Showman and illustrated with beautiful color photographs of more than fifty species of Ohio lichens by lichen expert Bob Klips.   

To register for The Wonderful World of Lichens, visit the Dawes Arboretum website:



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