50 
l.c. Almq.,p. 59. Celidium Aril. Flora 1874,/. 106. C.grumosum 
Kbr. Pg., p. 457.— Europe; and a parasitic Arthonia on Lecanora 
pallescens v. rosella , New Bedford, and on a Verrucama on lime¬ 
stone, Jamesville, N. Y., in hb. Willey, may probably be referred 
here.— Exs. Norrl. , n. 231. 
Yar. pallida, Rehm. Similar to A. varians, but also growing 
on bark. — Celidium Rehm. in Am. Exs., n. 376. Almq., p. 60. 
Europe. 
Yar. sordida, (Mass.) Arn. Apoth. rounded, confluent. Spores 
4 locular, fusiform, .012 by .003 mm. Conida Mass. Misc., p. 16, 
/vie., p. 4. Arn. Flora 1874, p. 106 ( Celidium varians var.) — 
Europe. 
Yar. carpathiea, (Kbr.) Arn. Lecidella Kbr. Pg., p. 212. Arn. 
Flora 1874, p. 106. But Almq., p. 62, seems to include it in A. in- 
texta, as also the var. sordida. 
305. A. intexta, Almcp Parasitic on apoth. of Lecidea entero- 
leuca rupicola. Apoth. indistinct, combined with the hyphae ot the 
supporting plant. Spores clavate, 3-4 locular, .013-15 by .005-6 
mm. Reaction vinous red.— Almq., p. 60. A. parasemoides Nyl., 
p. p. —Europe. 
Yar. pauperrima, Almcp Entirely destitute of paraphyses. Oth¬ 
erwise as in the species. Reaction none. — Almq., p. 62. —Scandi¬ 
navia . 
306. A. abrothallina, Nyl. Parasitic on Sticta D'Urvillei, Falk¬ 
land Islands. Arth., p. 99 ( 'nomen. ) 
Other parasitic plants now referred to Celidium as fungi, may per¬ 
haps also be considered as belonging to Arthonia, but have not yet 
been so referred by European authors; and according to Minks 
Morph. Lich. Studien. p. 23, species of Celidium, Celidiopsis, Conida, 
■and Abrothallus are also to be considered as Arthonias. 
***** Spores muriform. Arthothelium. 
307. A. cyrtodes, (Tuck.) Nyl. Thallus thin, glaucescent. 
Apoth. brownish black, rounded, convex, within blackening. Spores 
oblong, 8-12 locular, .060-85 by .021-25 mini. Reaction blue. — Pr. 
N. Gr.,p. 66. Fxs. Wright Cub., 11. 156, c, d, c, fide Midi. Arg. 
in Sched . — Cuba. 
308. A. distendens, Nyl. Thallus thin, white, minutely granu- 
lose or granulate-uneven. Apoth. black, somewhat convex, almost 
middling sized, within blackening. Spores oblong or ellipsoid, sub- 
muriform-divided, the longitudinal cells 1-3, .065-75 by .023-27 
mm. Reaction blue. — Pr. N. Gr., p. 66. — Flora 1866, p. 298. 
