245 
U. LapraporensE Hulting n. var. 
Thallus thinner than the preceeding, small, from ash color be- 
coming olivaceous or brown, rugulose, papulose, papules scattered, 
remotely prominent, beneath finely granular, foveolate, foveoli 
small, contracted, sanguineous within; apothecia reddish-brown, 
orbicular with a well raised margin I-2 mm. broad; spores large, 
orbicular $2 mic. Onrocks associated with the preceding variety. 
Labrador. 
Sticta Schreb. 
S. amplissima (Scop.) Mass. 
S. herbacea (Huds.) Ach. 
S. pulmonaria (L.) Ach. 
S. guerizans (Michx.) Ach. 
S. limbata (Sm.) Ach.; evidently quite new to this region. 
S. aurata (Sm.) Ach. 
S. scrobiculata (Scop.) Man. 
NEPHROMA Ach. 
N. arcticum (L..) Fr. 
LV. expallidum Ny). 
NV. laevigatum Ach. 
Var. parile Ny). 
N. Lusitanicum Schr. 
PELTIGERA Willd. 
P. venosa (L.) Hoff. 
P. apthosa (L.) Hoff. 
P. polydactyla (Neck.) Hoff. 
P. rufescens (Neck.) Hoff. 
P. pulverulenta (Tayl.) Nyl. (P. scabrosa Th. Fr.) 
P. matacea (Ach.) Fr. 
P. canina (L.) Hoff. 
Var. spuria Ach. 
Var. sorediata Schr. 
Var. spongiosa Tuck. 
SoOLORINA ACH. 
S. crocea (L.) Ach. 
S. saccata (L.) Ach. 
