Pyrenomycetese, Sphajriaceas, Diclyosporis, Pyrenophora. 897 



tectis et cum ea secedentibus, teiuiiter membranaceis, contextu laxe 

 parenchymatico, olivasceuti-fuligineo, setis teuuibus, paucis, rectis 

 V. sinuosis divergentibus, septatis, pallide fuligiDeis, mox deciduis 

 vestitis, basi fibrillosis, globoso-conoideis, ostioio rainuto, obtusiu- 

 sculo praeditis; ascis clavatis, plerumque curvatis; basi in stipitem 

 brevem nodulosum abeuntibus, sursura late rotundatis; paraphysi- 

 bus filiformibus cinctis, 90-100 s; 18-20; sporidiis octonis irreguia- 

 riter distichis, oblongis, transverse 5-septatis, loculis mediis vel 

 etiam extimis septo longitudinali divisis, ad medium parum con- 

 strictis, parte superiore crassiore, 21-24 s 9-11,* fusco-aureis. 



Hab. in caulibus emortuis Ruraicis scutati exsiccatis pr. 

 Trento. — P. pauciirichc^, P. phceocomoidi et P. abscondiUtj 

 affinis. 



7. Pyrenophora paucitdcha (Fuck.) Berl. et Vogl. Add. Syll. p. 177, 363o 

 Pleospora paucHricha Fuck. in Die zweite deutsch. Nordpolarf. il, 



p. 32, t. I, f. 3. — Peritheciis minutissimis, sparsis, subsuperlicia- 

 libus, conicis, aterrimis, vertice pilis paucis, brevibus, rigidis, cou- 

 coloribus obsitis; ascis ovato-oblongis, utrinque obtusis, subcurva- 

 tis, tuuica crassa praiditis, 8-sporis, 112 5 34; sporidiis irabricato- 

 subdistichis, oblougo-ovatis, utrinque obtusis, rectis, 5-septatis mu- 

 riformibusque, medio constrictis, fuscis, 34 »13. 



Hab. in foliis exsiccatis delapsis Salicis arcticae, Kaiser- 

 Franz-Joseph-Fjord in Groenlandia. 



8. Pyrenophora fenestrata Peck in Torr. Bot. Ciub. 1884, p. 28. — 363i 

 Peritheciis 280-370 a. diam., depressis, primum epidermide tnctis, 

 demum erumpentibus et liberis, setis parcis, rigidis, divergentibus 

 piaiditis; ascis evauidis; sporidiis oblongis, fenestratis dense coio- 

 ratis, in massa nigris, 40-50 :i 18-22, transverse 7-septatis, medio 

 ssepe coustrictis. 



Hab. in caulibus herbaceis emortuis, Utah Araer. bor. 



9. Pyrenophora aparaphysata (Therr.) I3erl. et Vogl. Add. Syll, p. 178, 3632 



Pleospora aparaphysala Therr. in Rev. Myc. 1882, p. 220. — 



Peritheciis majusculis, V^-Vi "'"'i- diam., corapressis, hysteriiformi- 



bus V. subsphaeroideis, primum epiderraido tectis, demum erumpen- 



tibus et tum subsuperficialibus, nigris dein nitidis, basi toraento 



byssino, radiante, rufescente, fugaci ciuctis, ostiolis setis nonnullis, 



rigidis, radiantibus pra^ditis ; ascis saccatis, breviter stipitatis, crasse 



tuuicatis, 120-150 c; 14-20, octosporis; sporidiis oblongis, eliipticis, 



5-7-septatis, murali-divisis, septis levissirae contractis, 20-25^:8- 



10, subflaviduiis, 



57 



