ABLS is an organization devoted to the scientific study of all aspects of the biology of bryophytes and lichen-forming fungi and is one of the nation's oldest botanical organizations.


ABLS Annual General Meeting 2022

ABLS will be meeting with the Botany Conference in Anchorage, AK

July 24-27, 2022

Registration is now open, early bird rates end on June 1st!

Eagle Hill Bryology and Lichenology Courses

Eagle Hill Institute is right on the coast of Eastern Maine, between Acadia National Park and Petit Manan National Wildlife Refuge. 

*Please note that proof of full COVID-19 vaccination (including booster) is required for acceptance into our seminars.


May 15–21 — Lichens and Lichen Ecology — Troy McMullin

May 22–28 — The Lichen Genus Lepraria — James Lendemer

June 5–11 — Introduction to Bryophytes — Fred Olday

June 12–18 — Introduction to Tardigrade Study and Identification — Emma Perry and William Miller

June 19–25 — Liverworts and Liverwort Ecology — Blanka Aguero

August 14–20 — Introduction to Lichens — Fred Olday


For general information, the registration form, seminar flyers, and a complete calendar:



If you have any questions about the content of the seminar, please reach out to the seminar instructor(s), whose contact info can be found on the seminar flyer. If a seminar you are interested in is full, and you would like to be put on the waitlist, please fill out the application form.

If you have any questions about registering for the seminar, please contact us at office@eaglehill.us.


Lichenology is the study of symbiotic associations between primarily an alga (or cyanobacterium) and a filamentous fungus.

Bryoandersonia illecebra.JPG

Bryology is the study of nonvascular plants including mosses, liverworts and hornworts.