Series B. Apothecia black. 
* Spores 2 rarely 3 locular, 
f Apoth. rounded, more or less lecideiform. 
a. Thallus glebous-squamose. 
144. A. glebosa, Tuck. Thallus of tumid, smooth, at length 
plicate, fuscescent squamules. Apoth. rounded, convex, soon 
crowded and confluent, the hypothecium brownish-black. Spores 
ovoid or oblong-ovoid, 2 locular, constricted in the middle, decolor- 
ate or pale brown, .010-16 by .005-6 mm. Reaction vinous red.— 
Gen.,p. 221. — On mosses on rocks, California; and what seems to 
be the same in Colorado and Washington Territory.— A. leucobola, 
Tuck, in litt. growing on the earth in Lower California, (D. Cleve¬ 
land, 1875,) seems to differ only in a paler thallus. In both the 
hymenium presents the appearance of regular, closely agglutinate 
paraphyses. 
b. Thallus uniform. Plants only exceptionally parasitic. 
X Growing on rocks, earth, or decayed vegetation. 
145. A. calcicola, Nyl. Thallus thin, obsolescent. Apoth. 
superficial, rounded, convex, greyish-pruinose. Spores ovoid, sim¬ 
ple or 2 locular, .011-13 by .005 mm. Reaction vinous red.— Arth., 
p. 100, Pr. Gall., p. 168.—On calcareous rocks, France. 
146. A. lapidicola, Tayl. Thallus thin, dispersed, olive-brown, 
or becoming pale. Apoth. rounded-difform, plane, within blacken¬ 
ing. Spores oblong-ovoid, 2 locular, .015-18 by .006-8 mm.; fig¬ 
ured in Hepp., n. 534 Reaction from blue vinous red. Spermatia 
.005 mm. long.— Hibern. II. p. 124. Br. and Rost}'. Dan.,p. 119. 
A. ruder alls, Nyl. Arth., p. \oo,Jide seipso in Flora 1881, p. 535. 
A. vagans v. Kcerberi, Almq., p. 51. Coniangium Kcerberi Lahm. 
{in litt.) Am. Flora 1863, p. 605. C. rupestre, Kbr. L. S. G., n. 
110, p. p., Pg. p. 272 p. p. fide Almq. Catillaria fusca Mass. Ric ., 
p. 60, fide Nyl. Pr. Gall., p. 169. Arthonia Hepp. Fxs., n. 534, 
Ph. Fr. Spitz., p. 46, Kbr. Pg., p. 272. {Coniangium Am. Flora 
1884, p. 651, who says Almq. is wrong in saying that it is the same 
as Catillaria atluillina.)—Mass. Ric., p. 80. — On calcareous rocks, 
Europe; and 1 refer here plants on limestone from Western New 
York, Miss Wilson, and on sandstone from Nebraska, Williams, and 
Illinois, J. Wolf. 
