120 OLAF GALLOE 
ACAROSPORACEZÆ. 
(Acarospora, Biatorella). 
Acarospora. 
Ac. discreta (Ach.) Th. Fr. 
Pebbles and firm rock near Hüsavik, N. Iceland, O. Galloe, 1913. 
New to Iceland. 
Ac. fuscata (Schrad.) Th. Fr. (D. B., p. 212, Ac. fuse. v. rufescens). 
Not found in Greenland. 4G. Brit. 
Ac. Heppii (Naeg.) Koerb. 
On basalt, Seydisfjord in E. Iceland; on lava, Havnefjord in SW. 
Iceland; O. Galloe, 1913. New to Iceland. 
Biatorella. 
B. Morio Flk. with var. pallescens. (D. B., p. 218). 
Greenland. G. Brit. 
EPHEBACE. 
(Ephebe, Polychidium). 
Ephebe. 
E. pubescens L. (D. B., p. 202). 
G. Brit. 
Polychidium. 
P. muscicola Sw. (D. B., p. 206). 
Not found in Greenland. G. Brit. 
LICHINACEE. 
(Lichina). 
Lichina. 
L. confinis O. F. Müller (D. B., p. 202). 
Greenland. G. Brit. 
COLLEMACEZÆ. 
(Collema, Leptogium). 
Collema. 
C. crispum L. (D. B., p. 206). 
Not found in Greenland. G. Brit. 
C. flaccidum Ach. (D.B., p. 206, Synechoblastus). 
Greenland. G. Brit. 
