lichen-Collema

Collema

Collema sp

Collema sp. photo by Bob Klips

Collema is characterized by its foliose, gelatinous (when wet) thallus, lacking a true cortex and medulla, bith rather homogenous throughout; usually olive brown to blackish, dull, with a photobiont of cysnobacteria. North America hosts 35 species while 10 have been recorded from Ohio.

<<PREVIOUSNEXT>>

BACK TO LICHEN IMAGES HOME PAGE