4-6 locular, .018-25 by -008-9 mni -—Ah velata f., Nyl. in luck. 
Gen., p. 221.—Hampshire Co., Mass., in hb. Tuck. New Bedford, 
rare, and on firs in the White Mts. in hb. Willey. 
115. A. ciesia, (FI.) Kbr. Thallus thin, granuloselepro.se, 
rust-colored. Apoth. brown, minute, orbicular, plano-convex, grey¬ 
ish pruinose. Spores 4 locular, the cells equal. Coniangium Fl. 
Exs., n. 117.— Arthonia Kbr. Eg., p. 269, Am. Flora 1864, p. 315, 
Almq., p. 26. Leprantha Kbr. Syst ., p. 289. Exs. Kbr. L. S. G., 
n. 77, Lojka Univ., n. 94.—Europe. 
116. A. fuliginosa, Fl. Thallus thin, ash-colored, somewhat 
mealy, rimose, uneven. Apoth. brown, adnate, rounded-difiform, 
soon confluent, convex, pruinose or naked. Spores 4 locular, .020- 
24 by .007-9 mm.., the upper cell larger. Reaction blue.— Bot. Zeit. 
1850 , p. 569, Kbr. Eg., p. 268, Almq., p. 27. A. pruinosa var. 
Nyl. Art//., p. 90. Leprantha Kbr. Syst., p. 295.— Exs. Lojka 
Univ., n. 143.—Europe. 
117- A. cassiolivens, Nyl. Thallus thin, white, somewhat lep- 
rose. Apoth. livid, rounded, plane or slightly convex, thin, grey- 
ish-pruinose, within dark. Spores oblong, 4 locular, .015-17 by 
.0045-55 mm - Reaction dark vinous red.— Flora 1878, p. 245. 
Exs. Norrl., n. 225. A note to the Sched. adds: “ A. ccesia ( Fl .) 
Nyl. in litt —Europe. 
118. A. glaucescens, Nyl. Thallus thin, white, effuse, now 
bursting into mealy soredia. Apoth. blackening, rounded, plane, 
thinly white pruinose, surrounded by a thickish thalloid margin. 
Spores oblong-ovoid, 4 locular, .020-30 by .0055-9 mm - Reaction 
from blue vinous red.— Nyl En., p. 357, Tuck. Gen., p. 221 (nomen .) 
—Southern States in hb. Tuck. On oak, New Bedford, in hb. Willey. 
Tuckerman. 1 . c. notes that the spores of the northern form are 
larger than those of the southern. 
119. A. cinereopruittosa, Schaer. Thallus thin, white, pow¬ 
dery, effuse. Apoth. blackening, small, numerous, rounded or 
somewhat clifform, plano-convex. Spores 4 (rarely 2-3-5) locular, 
the upper cell larger, brown or decolorate, .011-16 by .006-7 mm. 
Reaction vinous red. Spermatia staff-shaped, .005 -6 mm. long; 
figured in Flepp., n. 477. ( Thrombium siicticum.) — Eu., p. 243. 
Nyl. Arth., p. 94, Scand., p. 261, Lapp. Or., p. 187, Kbr. Eg., 
269, and A. lilacina ib.jide Almq. Almq., p. 26. A. melaleucella 
Nyl. Art//., p. 101 ,fide Old. Ereuss., p. 40, and Almq. Eyrenothea 
litacina Er. S. V. Sc., p. 121. E. stictica (/. spermogonifera ) Mass. 
Ric., p. 153.—Europe. White Mountains. 
120. A. Tnckermaniaiia, n. sp. Thallus white, continuous, in¬ 
determinate. Apoth. dark reddish-brown and blackening, rounded. 
