54 
323. A. phlyctiformis, Nyl. Thallus thin, white. Apoth. 
small, irregular, simple, appressed. Spores muriform, .018-29 by 
.008-10 mm. Reaction from blue vinous red. — Coll. Gall, mend., 
ft. 14, Arth., ft. 93, Pr. Gall., ft. 166. — France. 
324. A. plmeobam, Norm. Thallus from reddish ashy brown, 
contiguous. Apoth. minute, orbicular, convex, the hypothecium 
dark. Spores 4-6 locular, (in the American specimens referred by 
Nyl. to A. ftaralia , now submuriform,) .020-33 by .007-9 mm - 
Reaction vinous red. — Flora 1869, ft. 525, Almq.,ft. 47. A. para- 
lia Nyl. Flora 1877, ft. 565. fide Almq . — Maritime rocks, Europe, 
and on the same, coast of Maine, and island of Grand Manan. — A. 
ftaralia Nyl. is described as having a brownish ash colored, contin¬ 
uous, rimose thallus, the apoth. brown, rounded, plane, within pale. 
Spores ovoid, 4-5 locular, .018-22 by .007 mm. Reaction vinous 
red.—The European plant, according to Almq., grows intermixed 
with Verrucaria ceuthocarfta, and Th. Fr. in Scand., p. 343, consid¬ 
ers it as parasitic upon that. But the thallus of the American plant 
is pure, although the gonidia are the common greenish-yellow ones, 
(haplogonidia Nyl.) 
325. A. macrotlieca, F6e. Thallus white, thickish, effuse. 
Apoth. rounded-angulate, now confluent, bordered by a spurious 
thalloid margin, depressed, plane, the hypothecium pale. Spores 
ellipsoid, muriform, .045-65 by .016-26 mm. Reaction vinous red. 
— Suftftl., ft. 42, andt. 40 , f. 18, Nyl. Pr. N. Gr., ft. 104, Midi. 
Arg. Graph. Fee. ft. 60. A. rugosa Fee Ess., ft. 56, Suftftl., ft. 41, 
andt.\o,f. 16, fide Nyl. 1 . c. Exs. Wright Cub., n. 144^, 148, 
149.— Tropical. 
326. A. mesoleuca, Nyl. Similar to the preceding, but the 
apoth. white pruinose. Spores 035-50 by .016-22 mm., often 
broWn.— Pr. A 7 ". Gr., ft. 104, Midi. Arg. Graph. Fie. ft. 61. Exs. 
Wright Cub., n. 257, in hb. Tuck. — Tropical. 
327. A. ambiguella, Nyl. Thallus thin, white, sprinkled with 
minute soredia. Apoth. roundish or oblong-difform, minute, de¬ 
pressed. Spores oblong, irregularly 4-6 locular, one or two of the 
cells divided, .023-26 by .008 mm. Reaction none. — Pr. N. Gr., 
ft. 103. Exs. Liiidig, n. 827, 2809. — New Grenada. Spores figured 
in edit. 1, t. 2, f. 48. 
328. A. intervemiens, Nyl. Thallus ash-colored, indeterminate. 
Apoth. brownish-black or black, rounded or rounded-oblong, slightly 
difform, plane, two or three sometimes contiguous, within of the 
same color. Spores 6-8 locular, the cells 2-3 times divided, brown 
or decolorate, .022-29 by .008-10 mm. Reaction vinous red. — Pr. 
N. Gr., ft. 104. — Florida and Texas in hb. Tuck. 
