41 
Spores oblong-ovoid, 2-4 locular, minute.— Ncevia , Kph. Amboin., 
A 7 -—Amboina. 
2 59 - A. -Thallus thin, white. Apoth. adnate, orbicular 
or elliptical, convex, within dark reddish-brown. Spores oblong, 4 
locular, .013-15 by .0035-5 nun. Reaction none—Port Famine, 
Straits ot Magellan, Hassler Exp. Sent to Nyl. under n. 10. 
260. A. -. Thallus white, somewhat tartareous. Apoth. 
irregularly shaped, oblong and lobate, adnate, convex, within pale. 
Spores ovoid, ( 4 locular, the upper cells larger, .016-18 by .007 mm. 
Reaction blue.—Galapagos Islands, Hassler Exp. Sent to Nyl. 
under n. 13. 
ft Apoth. from rounded becoming elongated, or linear and stellate. 
261. A. punctiformis, Ach. Thallus white, determinate, or 
evanescent. Apoth. minute, rounded, oblong or somewhat difform, 
(hence rather belonging to the previous section,) but in other speci¬ 
mens relerred to the same species, elongated and sparingly branched, 
within pale. Spores oblong-ovoid, 4-(6) locular, .016-24 by -006-8 
mm. Reaction blue.— L. U., p. 141, and var. olivacea, glaucescens, 
differing only in the color of the thallus, Syn., p. 4. Nyl. Arth.,p. 
31, Pr. Gall., p. 167, Scand., p. 260, Kbr. Syst. p. 293, Wain. 
Adjum. II, p. 159, Almq.,p. 42. A. verrucarioides Ach. Syn., p. 
4. A. ecrustacea Duf. Jour. Phys., p. 6. A. atomaria, celtidis 
and populina Mass. Ric., p. 50. A. quercus Hepp, Midi. Arg. 
Genev., p. 70. A. Oleandri Rab. Exs., n. 972. A. nudata Chev. 
Par.,p. 543. A. griseo-alba Anz. Cat. Sondr., p. 94. A. micro- 
scopica Schcer. Spic., p. 246, Hepp., Exs., n. 560. Naevia orbicu¬ 
laris Er. Exs., n. 9. Opegrapha atra v. abbreviata Fr. L. E., p. 
367, saltern p. p., Tuck. Syn. 1848, p. 75.—Europe, N. America, 
widely diffused. The synonymy shows the difficulty of fixing the 
limits of this plant. It perhaps includes also the A. epipasta Ach. 
of Leight. Gr. Brit, and Kbr. Syst. The New England plant has 
the thallus now obsolete and now milk white. Nyl. has referred 
here as 11 A. punctiformis, optima, ” a New Bedford plant on white 
pine, in which the spores are club shaped, 4-6 locular, the upper 
cell larger, .016-28 by .007-9 mm - 5 spermatia .005-7 mm. long. A 
plant from Illinois, E. Hall, does not differ from a European speci¬ 
men called “ A. celtidis b. fraxinea HeppT in hb. Willey, commu¬ 
nicated by Ur. Muller. A plant from the mountains of N. Carolina 
in hb. Eckfeldt, with very minute, numerous, punctiform, rounded 
apoth., the spores ovoid, 3-4 locular, .013-16 by .0045-55 mm., 
seems near A. microscopica Mass.— A. epipasta of Kbr. is called A. 
microscopica (Ehrh.) Schaer. Spicil, p. 246; and A. punctiformis, 
verrucarioides, and epipasta Ach. are given as synonyms p. p. in 
