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mo in.Arthon. 4. CENOTHALAME^. PLcell.apk.
5. Arthona pndnQsa. Hoary sprhikled-moss.
Crust thin, rather tartarlike, uneven, smooth, cracked
white ; apothecia flat, sunk, roundish, many-sided, confluent,
dark brown, with a greenish-white hoar.
Liclii'ii impolitus, E/ir/i. Crypt.; Engl. Bot. 981.
Verrucaria impoliia, Hoffm. Germ. 172.
Parmelia impoliia, Achar. Meth. 160.
Arthonia pruinosa, Achar. Lich. 147.
On the bark of trees, especially oaks.
XXVIII. 118. SPILOMA. Acharius. Spotted-moss.
Tlialius crustlike, flat, expanded, adnate, uniform; apoihecia
composed of aggregated corpuscules; mass compact,
homogeneous, rather mealy, naked, irregular.— DiiFer from
the nematomycese by the presence of the thallus, and by
having no flocky threads mingled with the sporse.
1. SpUoma ium'iduliim. SwoIUm spolled-moss.
Crust rather cartilaginous, whitish ; apothecia crowded,
swollen, oblong, irregular, rough, reddish afterwards blackish-brown
and slightly hoary.
SpliJEria gregaria, Dicks. Crypt. 1, 22.
Arilionia tumidula, Achar. in Schrad. Journ. I, 3, 11.
Spiloma fallax, Achar. Meth. 10.
Spiloma tumidulum a and /S, Achar. Lich. 136.
On the bark of trees.
2. Spiloma versicolor. Charigeable spotted-moss.
Crust rather cartilaginous, powdery, cracked, greyish
and yellow; apothecia sunk, superficial, roundish, flat, afterwards
rather convex, confluent, rough, deep black.
Arthonia versicolor, Achar. in Schrad. Journ. 1,39.
Spiloma versicolor, ^c/iar.Ivic/«. 138; Engl. Bot. 2016.
On the bark of trees.
/3. variolomm. Crust leprous, powdery, greyish, rather
-warty; apothecia hemispherical, crowded, rather confluent,
deep black.
Spiloma variolosum, Engl. Bot. 207T.
Spiloma versicolor variolosum, Achar. Lich. 138.
3. Spiloma tricolor. Three-colour spotted-moss.
Crust rather tartarlike, cracked, powdery, white; apothecia
roundish, convex, aggregated, confluent, red, when
rubbed yellowish rust-colour.
Spiloma tuberculosum, Engl. Bot. 255G.
Spiloma tricolor, ^c/iar. Li'cA. 137.
On stones and the trunks of trees.