48 
(non Ach.) Ess., p. 53. A. dilatata Fee Suppl., /. 38, p. p. fide 
Mull. Arg. 1 . c. — Tropical in hb. Fee. 
*** Spores 8-plurilocular. 
296. A. platygraphidea, Nyl. Thallus thin, white, rugulose, 
determinate, limited by a dark line. Apoth. middling sized, rounded 
or rounded-difform, more rarely oblong, often prominent, sometimes 
bordered by a spurious thalline margin, within pale. Spores fusi¬ 
form, brown or decolorate, 14-16 locular, .052-73 by .014-22 mm. 
Reaction blue. — Pr. N. Gr., p. 104. — Mexico. Florida, Austin in 
hb. Tuck. 
297. A. align lata, F6e. Thallus white, somewhat mealy. Ap¬ 
oth. scattered, roundish, oblong, and angular, depressed. Spores 
ellipsoid-lanceolate, 12-14 locular, the extreme cells shorter, .048-55 
by .011—14 mm. — Suppl., p. 39, andt. 40 , f. 9. Midi. Arg. Graph. 
Fie. p. 59. Graphis, Mass. Mem., p. iri. A. polymorpha Eschw. 
Bras.,p. hi, fide A r yl. Pr. IV. Gr., p. 104, and Midi. Arg. Revis. 
Eschw., 2, p. 45. A. tremellosa Eschw. Sysl., p. 26, and f. 20. 
Mass. Ric., p. 54, ( Arthothelium ,) id videtur. — Tropical. —But 
according to Th. Fr. Gen. Heterol., p. 45, Eschweiler's plant is a 
Myriangium. 
298. A. stictica, (F6e) Nyl. Similar to A. angulata, but the 
thallus olive-green. Spores brownish in age, 10-12 locular, the two 
intermediate cells a little larger, .070-80 by .015-23 mm. — Lecidea 
Fee Suppl., p. 103. Nyl. En.,p. 133. Mull. Arg. Graph. Fee. p. 
60. — West Indies. 
299. A. atrata, (F6e) Mull. Arg. Thallus greyish, rimose, 
limited by a dark zone. Apoth. substellate-ramose, obtusely short- 
branched, dilated, innate, concave when dry, within fulvescent. 
Spores oblong-ovoid, rounded at the extremities, 9-12 locular, the 
extreme and the middle cells commonly a little larger, .050-55 by 
.019-23 mm. — Graphis Fee Ess., p. 35, Suppl., p. 27, and t. 19. 
Mull. Arg. Graph. Fee. p. 59; non A. substellata Nyl. Pr. N. Gr., 
p. 106, nee A. atrata Tuck. Gen., p. 222. — Tropical. 
300. A. calospora, Mull. Arg. Thallus thin, white, about the 
apoth. tumid. Apoth. orbicular, angulose, plano-convex, when wet 
blackish brown. Spores 10-12 locular, commonly curved, .050-60 
by .018-20 mm. — Socotr.,p. 12. — Socotra, Africa. 
301. A. pelltea, Leight. Thallus dirty-brown, rimulose, bor¬ 
dered by a dark line. Apoth. brownish-black, rounded-difform, 
plane. Spores linear-obovate, brown, 8-10 locular. Reaction vi¬ 
nous red. — Ceylon, p. 180, and t. 36,/. 37, according to which the 
extreme cells of the spores are larger. — Ceylon. 
