28 
Adjnm. II, p. 160 (excl. syn.) A. vagans var. Almq. p. 53- Co- 
niangium Am. Flora 1884, p. 410. Abrothallus Mass. Ric., p. 88. 
—Europe : and Nyl. has referred here a plant only found once, on 
dead wood, New Bedford. Exs. Norrl., n. 230.—The variety of 
opinions respecting this plant and its congeners illustrates the diffi¬ 
culty of coming to harmonious conclusions about organisms so much 
alike. Wain, refers here A. lapidicola, apatetica, tenellula, dryina, 
betuleti, dispuncta , and vagans , and Arnold A. vagans, apatetica 
and rugulosa. 
Var. inumlata, Wain. Apoth. very minute, rounded, convex, 
the hypothecium dark. Spores .009-11 by .003-4 mm. Reaction 
vinous red.— Adjum. II, p. 162.— On Lecidea (Biatora ) inundata 
and granitic rocks, Scandinavia. 
169. A. copromya, Anz. Description not seen. According to 
Almq., p. 34, it resembles A. mediella. Epithecium granulose, hy¬ 
pothecium orange-brown. Spores 2 locular, acute, .0016-17 by .006 
mm.— Buellia Anz. Long., n. 341. Arthonia ibid. Comm. Soc. 
Critt. Ital. 1864, p. 21. A. myocoprodes Nyl. in lift. Jide Stitz. 
Helv., n. 1088. Not A. copromya Trev. Venet., n. 254, fide Kph. 
Gesch. Ill, p. 228.— Buellia mughorum, Anz. Lang., n. 342, Comm. 
1 . c., p. 19, is in a specimen sent me under this name an Arthonia of 
this stock, with minute, rounded, plane apoth., and 2 locular, con¬ 
stricted, brown spores, .018-22 by.009-11 mm., the hypothecium 
pale, reaction vinous red. 
170. A lividofusca, Mull. Arg. Thallus thin, effuse, olive- 
green. Apoth. orbicular or now angulose, when dry blueish-black, 
plane, when wet livid-fuscescent, convex. Spores narrowly obovoid, 
2 locular, .009-11 by .003 mm.— Beitr., n. 306.—On leaves, Brazil. 
171. A. Myristicae, Mull. Arg. Thallus thin, effuse, olive- 
brown. Apoth. obtusely angulose or orbicular, when dry brownish- 
black, when wet brown. Spores clavate obovoid, 3 locular, .009-13 
by .004 mm — Beitr., n. 305.—On leaves, Phillipine Islands. 
172. A. trilocularis, Mull. Arg. Thallus inconspicuous, oliva¬ 
ceous. Apoth. angulose-orbicular, black or brownish-black, de¬ 
pressed-concave, within dark. Spores cylindrical-obovoid, 2-3 
locular, .010-12 by .004 mm.— Beitr., n. 304.—On leaves, Mada¬ 
gascar. 
173. A. aciniformis, Stirt. Lick, on Leaves, p. 7. 
174. A. accolens. Stirt., l.c.p. 7.—I know these two lichens 
only by the reference to them by Mull. Arg. Beitr., n. 304. 305, 
306, as of the same stock of those there described. 
