. The Bryologist. Bryology; Bryology -- Periodicals. -38- EvERNiA, although belonging to the same family as Usnea and Aledoria, is quite different in its general appearance. The thallus is fruticose, soft, some- what flattened and wrinkled. It is usually covered with soredia, which in some species are very mealy. The color is either light gray, greenish-gray, or lemon. Evernia has a medullary layer which is very cottony and soft. The apothecia are large and flat; in some species they are surrounded by coarse fibrils, in others they are free from them. Everniaprunastfi (L.) Ach. (Plate I\'. b)
. The Bryologist. Bryology; Bryology -- Periodicals. -38- EvERNiA, although belonging to the same family as Usnea and Aledoria, is quite different in its general appearance. The thallus is fruticose, soft, some- what flattened and wrinkled. It is usually covered with soredia, which in some species are very mealy. The color is either light gray, greenish-gray, or lemon. Evernia has a medullary layer which is very cottony and soft. The apothecia are large and flat; in some species they are surrounded by coarse fibrils, in others they are free from them. Everniaprunastfi (L.) Ach. (Plate I\'. b) if found quite generally, varying somewhat in appearance in different localities. It grows on trees. The thallus is pale green, flattened and furrowed. It is usually covered with soredia, which are green, not white as in Aledoria. The branching is angular, pointed or spike-like at the tips. Below, the thallus is channeled. The apothecia are very rare. They are lateral, namely, borne on the flat surface of the thallus. Evernia furfiiracea (L.) Mann. (Fig. 4.) The thallus, while flattened, turns under a little, giving the lower side a trough-like appearance. Branching is more frequent than m. prunastri, and is more pinnate. The thallus, which is a light gray, is slightly rough or coral-like. Below it is black or has black spots on it. The apothecia are small and on the margin of the thallus. They are cup-shape and reddish-brown. Evernia fia-furacea var. C/adonia Tuckerm. is much \\Vq furfiiracea, only much smaller and finer, and more brittle. This form is found in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Bryological and Lichenological Society; American Bryological Society; Sullivant Moss Society; Grout, A. J. (Abel Joel), 1867-1947; Jennings, Otto Emery, 1877-1964; Steere, Willi
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