lichenaceousadj.

/lʌɪkəˈneɪʃəs/Etymology: < lichen n. + -aceous suffix.
1881 J. W. Griffith & A. Henfrey (ed. 4) (at cited word) Opegrapha, A genus of Graphideæ (Lichenaceous Lichens).
This entry has not yet been fully updated (first published 1902; most recently modified version published online March 2018).