51 
Thallus sordide albidus, tenuis, continuns, rugulosus, 
opacus, ubique ab apotheciis, fissuras gracillimas, elongatas, 
leviter thallodice marginatas et vario modo flexuosas et ramosas, 
partim etiam anastomosantes efformantibus, persuleatus, epithecio 
fissurinarum obscuro vel vix visibili; monospore, spora murali- 
formis, ellipsoidea, hyalina, long. 0,070—-080, erass. 0,015—025 mm. 
Ad cortices, _ 
Species fissurinis numerosis, eximie graeilibus, thallum 
undigue obtegentibus ab affinibus distinguenda. 
96. Graphkis caesiopruinosa (Fe) in Bullet. soc. bot. Fr. 
XXL 1873. p. 30; (sub Platygramma); Krempelhuber in Flora 
1876, pag. 447. 
Ad cortices. 
Sporae 1—3 in asco, fusiformi-ellipsoideae, muralifor- 
mes, primo hyalinae, dein fuscescentes, tandem obseuro-oliva- 
cege, corrugatae et deformes, long. 0,090--0,100, crass. 0,019— 
021 mm. Paraphyses filares, granulis immixtis multis, itaque 
hymenium filare-granulosum. 
97. Arthonia adspersa (Mont.), Krph.; Ustalia adspersa Mont. 
in Ann. d. scienc. natur. Bot. XVII, p. 278. 
Ad cortices. 
98. Opegrapha comma Ach. 
Ad cortices. 
99. Opegrapha helerocarpa Fee Ess. p. 29; tab. VI. fig. 2. 
Tabaccal, ad corticem vedri. 
Sporae 6—8.nae, aciculares, incolores, long. 0,044--050, 
crass. 0,008—005 mm., 10—12 et ultra septatae. 
Apotheeia in his speciminibus Argentinis & typo tantum 
nonnihil majoribus diverse, 
100. Glyphis confluens Mont. Lich. Guyanens. Cent. DIL p. 81. 
In silvis litoralibus juxta flumen Gualguaychu, ad ramos ar- 
borum. - 
Sporae 8nae, oblongo-fusiformes, 8—10-loculares loeulis 
uniseriatis, hyalinae, long. 0,033—038, erass. 0,007—009 mm. — 
101. Chiodecion rubrocineium (Ehrbg.) Nyl. 
Ad cortices, Rio negro inter Oran et $. Andres, sterile. 
102, Endocarpon pusilum (Hedwig st. erypt. II. 56} Schaer. 
En. p. 233. \ : 
Ad rupes. 
103, Verrucaria felivica Krph. in Rabenh. jun. Lichenes Me- 
xiceni, Hedwigia 1876, 
