Pyrenomycetese, MicrothyriaceEe, Hyalodidymse, Microthyrium. 1055 



globatis, elongato-ellipticis vel suboblongis, deorsum parum angu- 

 statis, utrinque rotundatis, fuscis, supra medium linea alba (septo?) 

 notati.*, ad basini appendicula brevi, verruciformi, fere hyalina v. 

 fusca prseditis, 12-14::; 5-6. 



Ilab. ad Trichiliae Hieronimi folia viva, Argentina, Ta- 

 bacal cerca Oran (Keck); 

 2. Vlzella guaranltica Speg. F. Guar. II, n. 121. — Peritheciis su- 4188 

 perficialibus, plus minus confertis, ex hemisphserico conoideis, 300- 

 400 u. diara., dimidiato-scutatis, adnatis, apice obtusis, astomis, 

 atris, glabris, subnitentibus, ssepe basi areola strictissjma, tenui- 

 crustacea, opaca cinctis, carbonaceis, crassiusculis, duris, contextu 

 indistincto, atro ; ascis cylindraceis, 8-sporis, mox diffluentibus; 

 sporidiis navicularibus, utriuque acutiusculis, 16-18=; 10, oblique 

 monostichis, opace fuligineis. 



iZad. ad culmos dejectos putrescentes Bambusaceae cujusdani 

 in silvis inter Calle-poi ot Yaguaron Brasilise. 



Sect. 3. Hyalodidymic. 



MICeOTHYRiUM Desra. — Sacc. Syll. II, p. 662. 



1. Microthyrlum paraguayense Speg. Fungi Guar. Pug. I, n. 294. — 4189 

 Maculis nullis: peritheciis epiphyllis, sparsis v.. hinc inde laxe gre- 

 gariis, parvulis, 150-160 ix. diam., orbicularibus, dimidiato-scutatis, 

 atris. membranaceis, contextu exiraie subparenchymatico-radiante, 

 ostiolo minuto, rotundo donatis; ascis cylindraceo-obclavatulis, apice 

 truncato-rotundatis crasseque tunicatis, basi coarctatis miiinte no- 

 doseque stipitatis, 30-32;= 8-10; paraphysibus siraplicibus, parcis 

 obvallatis, 8-sporis ; sporidiis distichis, clavulatis, medio 1-septa- 



tis, constrictis, loculo supero crassiore subglobosoque, infero co- 

 nico, 7-8 - 2„ hyalinis. 



Hab. ad folia viva Sapindaceae cujusdam in silvis pr. Gua- 

 rapi Brasilise. • 



2. Mlcrothyrium caaguazuense Speg. Fungi Guar. Pug. 1, n. 296. 4190 

 — Subiculo tenuissimo, laxe arachnoideo, fusco, araphigeno, utrin- 

 que folium saepe totutn ambiente; peritheciis hinc inde in suhi- 

 culo sparsis, dimidiato-scutatis, 150-200 :j.. diam., merabranaceo- 

 coriacellis, fusco-atris, ostiolo vix perspicuo perforatis, ambitu fim- 

 briatulis, contextu breviter prosenchymatico, peripherice pellucido, 

 centrali opaco, olivaceo-fuligineo ; ascis ovatis vel ellipticis, tunica 

 modice incrassatula, utrinque acutato-rotuudatis, crasse brevissime' 



