
46 
disco plano-convexo nigro albo-pruinoso, margine tenui 
thallo primitus coronato. Spore octone, parve, e sub- 
roiundo brevi-cllipsoidee obtuse, dyblaste, fusca. 
Rocks on the coast; Mr. Bolander. Thallus of young 
plants contiguous, the circumference obscurely effig- 
urate. In older ones the lobation of the margin is not 
very unlike that of states of Lecanora circinaia. 
Apothecia generally comparable with those of Z. albo- 
atra; but the spores differ. 
B. lactea (Massal.) Koerb. Coast; Mr. Bolander. 
B, stellulata (Tayl.) Coast; Mr. Bolander. 
BuE.Luia pullata (sp. nova) thallo areolato obscure fusco, 
areolis confertis minutis concavis angulatis crenatisque ; 
apotheciis sessilibus, disco nigro epaco marginem obtusum 
demum excludente. Spore octonee. obtuse ellipsoidee, 
dyblaste, diam. 2-3} plo longiores, fusee. Rocks on 
the coast; Mr. Bolander. Scale-like areoles compara- 
ble with those of conditions of Lecidea fusco-atra, but 
minute. Spores with approximated sporoblasts; the 
isthmus obsolete. \ 
B. halonia (Ach.) Coast; Mr. Bolander. 
B. parasema (Ach.) Koerb. Coast; Mr. Bolander: 
Rocky Mountains; Dr. Parry. 
B. papiliata (Sommerf., Nyl. B. insignis, Th. Fr.) 
Rocky Mountains; Dr. Parry. 
B. albo atra (Hoffm). Th. Fr. Coast; Mr. Wright. 
B. parasitica (Floerk.) Th. Fr. Coast; Mr. Bolander, 
B. oidalea, Tuck. (Lecid, Obs. Lich.) Alcatraz; Mr. 
Wright. Mendocino city ; Mr. Bolander. San Diego ; 
De. Cooper. Oregon; Dr. Newberry. 
B. Montagnai (Flot., Koerb.) Rocky Mountains; Dr. 
Hayden. y 
B. geographica (L.) Rocky Mountains; Dr. Parry. 
Coast; Mr. Bolander. 
