Pi. cell. aph. 4. CENOTHALAME#. 118, Spiloma. 481 
4. Spiloma microclonium. Fine-branched spotted-moss. 
Crust very thin, greevish ; apothecia bursting forth, small, 
convex, crowded and confluent, slightly branched, deep 
black. 
Spiloma microclonium, char. Meth. Suppl. 53 Engl. Bot. 2150, 
On old wood. 
5. Spiioma microscopicum. Microscopic spotted-moss. 
Crust spreading, very thin, membranaceous, greyish ; 
apothecia very minute, dotlike, black, lead-cclour when 
dry. 
Spiloma microscopium, Turner and Borrer in Engl, Bot. 2395, 
On timber-work exposed to the air. 
Thallus scarcely conspicuous, except by the bluish co- 
lour it gives to the wood; apothecia only discernible by a 
powerful microscope, yet stain the fingers black. 
6. Spiloma dispersum. Scattered spotted-imoss. 
Crust very thin, film-like, greenish grey; apothecia dis- 
persed, hemispherical, sooty, mternaily yellowisi-green. 
Spiloma dispersum, Turner and Borrer in Engl. Bot. 2598, 
On old rails, like a greenish stain. 
7. Spiloma decolorans. Staining spotted-moss. 
Crust spreading, very thin, membranaceous, greyish 
white, when rubbed yellowish-green ; apothecia minute, 
flat, confluent, purplish-grey. 
Spiloma devolorans, Turner and Borrer in Engl- Bot, 2599. 
On the bark of oak, on boarded buildings and pales. 
8. Spiloma punctatum. Dotted spotted-moss. 
_ Crust thin, rather powdery, white; apothecia scattered, 
minute, dotlike, solid, black, with dark-brown hoar. 
Spiloma punctatum, Turner and Borrer in Engl. Bot. 2472. 
On old oaks. 
GG. Cauicipiz. Thallus crustlike or very thin, uni- 
form; apothecia cupshape, bordered, podicilled, including 
a naked: powdery mass forming a flat or convex centre, ra- 
ther solid internally; sporidia very crowded, among. the 
‘powdery mass, accompanied with many twin vesicles, or 
scattered, nestling in the consolidated parenchyme of the 
swollen centre.— Differ from protomycee by the presence of 
_athallus and apothecia; in very young plants the apothecia 
are covered with a membrane which soon disappears. 
VoL. I. 21 
