equal in height, and sometimes so arranged as to form a
sort of spurious pervious cup; the surface very rugged,
the greenish grey epidermis being broken into small granules,
which sometimes become leafy, and the white internal
substance splitting longitudinally, in a most irregular
manner, as if by the separation of its component fibres, in
clefts of various sizes, open to the central hollow. Tubercles
brown, varying in intenseness of hue, convex even
when small, confluent into a rugged capitulum of larger
diameter than the branch that supports it, the summit of
which it embraces with its reflexed edges, internally hollow
with some granules and intersecting fibres.
Cenomyce leptophylla of Acharius, first published in English
Botany, t. 1782, under the name of Lichen microphyl-
lus, (Acharius himself having, according to Sir J . E. Smith,
the trivial name,) is so nearly allied to C. cariosa
that future observation may, perhaps, prove it not specifically
distinct. It differs however by its smaller size, more
entire leaf-scales, and smooth and almost always undivided
stalks.
We have not ascertained to what Cladonia Dill. t. 15.
f 15. B. really belongs; but we dare not follow Floerke in
referring it to C. cariosa, notwithstanding the resemblance
of the figure.
The decision of later writers, especially of Floerke, in
favour of the generic name chosen by Hoffmann, has led to
its adoption here, although the Acharian designation is,
as applied to the whole genus, more truly descriptive.—
W. B.