Parmelia Physodes LichenParmelia physodes, (L.) Ach.
Habit and habitat.-Common on dead limbs of pines and hemlocks, lightly attached to its support. When it completely encircles the smaller twigs the tree has a particularly attractive appearance.
Vegetative organs (thallus).-Gray-green above with finely cut, inflated lobes, usually overlapping; black beneath except at the margins where it is smooth and brown.
Fruiting organs (apothecia). -Large shallow cups; reddishbrown with entire margins.
Name.-The specific name physodes is from the Greek; bellows and like, and refers to the inflated character of the lobes.