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SPILOMA dispersum.
Scattered Greenish Spiloma.
CRYPTOGAMIA Algce.
Gen. Char. Receptacles shapeless, without a border,
powdery, in an uninterrupted crust.
Spec. Char. Crust filmy, very th in , greenish grey.
Receptacles mostly dispersed, hemispherical,
so o ty ; internally yellowish green.
Svn. Spiloma dispersum. Turn, and Borr. Lich,
Brit. v. 1. 32.
N o t unfrequent on old rails. It is a very distinct and unequivocal
species. The crust looks only like a greenish or
olive stain. The receptacles are more or less widely scattered,
rarely confluent, smaller than poppy-seed, hemispherical,
rough, of a sooty or brownish black; internally their substance
appears solid, and of a light yellowish, or olive, green. The
latter part commonly becomes readily obvious, as the outside
is easily rubbed off; in which state each receptacle looks like
a little black ring round a greenish spot, and might hastily be
mistaken for the shield of a Lichen.
2 Jp8.
