CRYPTOGAMIA Alga.
G en. Char. Receptacles capitate, stalked, totally different
in substance aind colour from th e crust, with
a border of their own substance ; disk powdery.
Spec. Char. Crust filmy, very th in , whitish. Receptacles
on thickish black stalks, obovate or hemispherical,
black, with black, prominent, loose
powder.
Syn. Calicium curtum. Turn. & Borr. Lich. Brit.
148.
T H E learned authors of the Lichenographia Britannica, to
whom we are obliged for specimens of this species, describe it
as the most common of its genus, on decaying wood in shady
places, though not to be referred with certainty to any described
by foreign writers.
It is most nearly akin to C. debile (see our t. 2462), from
which, as far as we can find, it differs chiefly in the shortness and
thickness of the stalks, and greater size of its receptacles^ whose
base is always decurrent into the stalk, not flat or excavated
underneath. The powder of the disk is also more prominent and
copious, sometimes cohering in an oblong shape, like a little brush.
2503.