— 180 — 



pressione membranula thallina radiatim striolata centro aperta 

 obtecta; apothecia ignota; spermatia setacea, cire. 20 plonga et 1/3 

 Ij lata, paullo sigmoideo-curvata et recta, utrinque obtusa. — Ha- 

 bitu fere St. elegantem v. Fèei referens, sed plagulae dense striola- 

 tae et centro umbilicatae, superficies tamen non prominenter ner- 

 vulosa, quo charactere statim a St. complanata recedit. — In fo- 

 liis Trichiliae prope Guarapi : n. 4013 pr. p. 



Trib. XXIII. Pyrenuleae MûlI. Arg. Pyrenoc. Gubens. p. 375 

 et 381. 



Subtrib. 1. Astrothelieae Miill. Arg. P} r renoc. Cub. p. 375 

 et 382. 



215. Lithothelium paraguayense Mùll. Arg.; thallus tennis, 

 pallide olivaeeus, laevigatus, démuni subrimulosus, linea fusca 

 cinctus; apothecia composita, diametro cire, 1 mm. aequantia, ni- 

 gra, ex immerso emergentia, parte emersa démuni nudata et nigra, 

 peritheciis 2-4 composita v. subinde singulo tantum omnino decum- 

 bente formata, centro depresso in umbonem, se. in ostiolum obtuse 

 umbonato-prominens evoluta sunt; perithecia singula horizontalia, 

 late longicolla; nucleus ob situm perithecii horizontalis; paraphyses 

 copiosae, capillares, liberae; asci lineares, horizontales, 8-spori ; 

 sporae 17-20 p longae, 6-8 1/2 p latae, late et obtuse fusiformes, 

 rectae, 4-loculares. — Planta medesta at structura valde insignis, 

 generice accurate cum cubano calcicolo Lithothelio cubano conve- 

 niens, sed thallus alius, perithecia omnino horizontalia in collum 

 amplum angustata. Apothecia tetracarpica fere Parmentariam 

 astroideam simulant. — Corticola prope Paraguari, parcissime 

 lecta. 



Subtrib. 2. Trypethelieae Miill, Arg. Pyren. Gubens. p. 376 

 et 389. 



216. Trypethelium catervarium Tuck. Gen. p. 260; Verrucaria, 

 catervaria Fée Ess. p. 90. t. 22. f. 1. — Gorticolum prope Guarapi : 

 n. 4171, 4182. 



217. Trypethelium tropicum Miill. Arg. Pyren. Gub. p. 393 ; 

 Verrucaria tropica Ach. Univ. p. 278; Verrucaria Gaudichaudii 

 Fée Ess. p. 87. t. 22. f. 4. — Ad corticem Jalrophae Curcadis prope 

 Asuncion. 



218. Trypethelium Eluteriae v. itiaequale Miill. Arg. Pyren. 

 Gub. p. 393; Trypethelium inaequale Fée Monogr. Tryp. 

 p. 30. t. 13. f. 2. — Ad truncos Curcadis prope Asuncion. 



219. Melanotheca Agiiariana Fée Ess. Suppl. p. 71. t. '3(5 et 41. 

 — Ad truncos Jatrophae Curcadis prope Asuncion. 



Subtrib. 3. Verrucarieae Miill. Arg. Pyren. Gubens. p. 376 

 et 308. 



220. Porina (s. Euporina) Peponùla Miill. Arg.; thallus glauco- 

 virens, subtenuis, uudulato-rugulusus, superficie laevis, ambitu 

 extenaatus et zonula fulvescente limitatus; apothecia in verruca 

 cucurbitellina sessili depresso-hemisphaerica, 3-4 mm. lata, basi 

 coustricta, vertice latiuscule deprcsso-umhilicata et undique conco- 

 lore et laevi inclusa, subglobosa, pallida; ostiolum in fundo dopres- 

 sionis punctiforme, fulvo-fuscum ; paraphyses firme capillares; spo- 

 rae in ascis angustis 8-nac, fusiformes, utrinque obtuse acutatae, 

 ?7-:»2 /> longaé et (halone non computato) 5-7 p latae (3-)7-septatae ? 

 articuli subaequilongi. — Aproxima /'. africana Miill. Arg. Lich, 



