(187 ) 
Fr. Lecid. insignis, 3, Hepp Fl. Eur. n. 40) occurs, in the v. geophila, Th. 
Fr., in Greenland (J. Vahl e Th. Fr. 1. c.) and in the var. albo-cincta, Th. 
Fr., in islands of Behring’s Straits (Mr. Wright). The spores of the first- 
named variety are quadrilocular, according to Dr. Fries; and I observe, 
rarely, traces of three dissepiments (which Hepp found also in his cited 
lichen) in the v. albo-cincta ; aS much more evidently in another plant, 
clearly referable to the present species, from the Rocky Mountains (Dr. 
Parry).——B. parasema (Ach.) Koerb., is found, according to Nylander, 
throughout the earth. It is a native of arctic America (Hook. Th. Fr.) 
and occurs commonly throughout the United States. Spores bilocular; 
but they pass, rarely, in several specimens (near Chester, Pa., Myself; 
Ohio, Lea; Texas, Mr. Wright) into tri-quadrilocular conditions, sufficiently 
explaining the typically quadrilocular v. triphragmia, Th. Fr., which 
probably occurs here. Inastate of the last from Nicaragua (f. sorediata) 
I observe also 6-locular spores. A thin, white bloom is sometimes 
observable in the apothecia of Texas specimens, to be referred to the 
v. cesio-pruinosa, Nyl. (Wright Lich. Cub. n. 240).——B. dialyta (Nyl. 
sub Lecid. in Flora Ratisb. 1869, p. 123. Buellia parasema var. micro- 
carpa, Tuckerm. im litt.) differs from the last species in its minute, 
immarginate, scabrous apothecia; and the spores are 0,019-26™™- long, 
and 0,006-10™" wide. The lichen occurred on Pinus contorta, in Cali- 
fornia (Mr. Bolander). But I cannot distinguish from it a New England 
plant, found upon Hemlock, in Vermont (Mr. Russell) and in Massachusetts 
(Mr. Willey) the general features, and all the characters of which are in 
fact quite the same. —— B. myriocarpa (DC.) (Lecidea, Nyl., Lich. Par. 
n. 61) occurs not uncommonly on the scaly bark of Pines, and on old rails 
and planks in New England; as in Greenland (J. Vahl in Th. Fr. 1. c.) 
New Jersey (Mr. Austin) and Illinois (Mr. Hall). It is found also on 
granitic rocks in New Hampshire (Mr. Frost) and Massachusetts. —— 
B. Schereri, De Not. (Lecid. nigritula, Nyl.) similar to small conditions of 
the last, but with very minute spores, like those of some Calicium, is 
perhaps not rare, but I have only met with it on dead wood, in the White 
Mountains; and received it from New Bedford (Mr. Willey) and New 
Jersey (Mr. Austin).——B. turgescens (Lecidea, Nyl. in litt.) a common 
inhabitant of old rails and poles in Massachusetts, is distinguished from 
B. myriocarpa, by its well-developed, plicate-verrucose thallus, often 
closely resembling that of Lecidea insularis, Nyl. Spores small, 0,009- 
14™. long, and 0,005-7™™- wide. ——B. Elize (Lecidea, Tuckerm. Suppl. 
1, l. c. p. 428) remarkable for its blood-red disk, has been found on the 
bark of Pines, —Tower Hill, County Sussex, Virginia, Mrs. Tuckerman, 
and in Vermont (Mr. Frost)—and of White Cedar, New Bedford, Mass. 
(Mr. Willey). Spores bilocular, measuring 0,009-0,015™™- in length, and 
0,004-0,007™™- in width. ——B. vernicoma (Lecid. Tuck. Suppl. 1, 1. ¢. p. 
429) a minute lichen of granitic rocks, in Massachusetts (Oakes) in Penn- 
sylvania (Dr. Michener) in New Jersey (Mr. Austin) and at Aiken, South 
