About Bathelium carolinianum (Tuck.) R.C.Harris
Bathelium carolinianum is a lichen that has a greenish-brown thallus. Its dark brown perithecia grow clustered within a pseudostroma that contains abundant yellow pigment. This lichen most often grows on smooth-barked hardwoods, with American holly being a particularly common host. It shows no reaction to any standard lichen chemical spot tests. Trypethelium virens looks somewhat similar to this species, but differs because its pseudostromata match the color of its thallus, and its pseudostroma does not contain yellow pigment.
