North American Lichen Checklist

This checklist consists of cumulative updates to the most recently published North American checklist (Esslinger 2021). Access the latest cumulative checklist, Version 25 (pdf). 

Citation: Esslinger, T. L. & C. A. Morse. 2026. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the Continental United States and Canada, version 25. Opuscula Philolichenum 25: 45–384.

Please inform KU Botany Collection Manager Caleb A. Morse of any oversights, omissions, additions, or changes by providing him electronic or paper copies.