282 Sphseriacese, Dictyosporee, Pyrenophora. 



11. Pyrenophora Venziana Sacc. F. Ven. Ser. II, p. 308, F. it. t. 303 3851 



(Pleosp.), Pi. phceospora var. brachyspora Niessl Not. p. 35. — 

 Peritheciis erumpenti-superficialibus, globuloso-depressis , remote 

 sparsis, atris, 200 <i. diam., ostiolo acute papillato, setulis brevi- 

 bus fuligineis ornato, perithecii contextu distincte pacenchymatico, 

 fuligineo; ascis oblongis, crassis, apice rotundatis, basi breve at- 

 tenuatis, subsessilibus, 70-80 -21-22, paraphysibus filiformibus ob- 

 vallatis, 8-sporis; sporidiis crebre distichis, fusoideo-rhornbeis, 

 utrinque acute attenuatis, 28-34^12-15, initio luteolis, lenissime 

 medio constrictis, dein prorsus non constrictis, fuligiueo-opacis, 7- 

 septatis denseque muriformibus , strato gelatinoso primitus ob- 

 volutis. 



Hab. in foliis sepalisque exsiccatis Facchinise lanceola- 

 tse in alpibus Cadubriae, Belluno Ital. bor., ubi legit pharm. S. V-ex- 

 zo, in Facchinia et Arenaria in Heivetia (Niessl). — A Pyr. 

 phazospora praecipue differt sporidiis brevioribus, distintius rhom- 

 beis, rectiusculis etc. 



12. Pyrenophora Peniciilus (Schm.?) Sacc, Pieospora Penicillus Fuck. 385? 

 Symb. myc. App. II, 23, Splueria Penicillus Schm. in Fr. S. M. II, 

 pag. 508 (ex parte?). — Peritheciis sparsis, globosis, tectis, tur- 

 gidis, nigris, ostiolo erumpente papillato, cylindraceo penicillato; 

 ascis oblongo-cylindraceis, stipitatis, 8-sporis, 124-16; sporidiis 

 oblique rnonostichis, oblongis, utrinque subobtusis, medio constri- 

 ctis, 5-6-septatis muriformibusque, aureo-flavis, 20-0. — Status 

 spermogonicus: Phoma penicillata Fuck. 



Hab. in caulibus putridis Linarise vulgaris et Erigeron- 

 tis canadensis, pr. (Estrich Germanise. — Perithecia denique 

 coliabascentia. 



13. Pyrenophora nivalis (Niessl) Sacc, Pieospora nivalis Niessl.Not. n*53 

 pag. 20, tab. IV, fig. 19. — Peritheciis in matrice parum deni- 

 grata gregariis, saepe stipatis, erumpentibus, mox liberis, majuscu- 



lis, 0,5 rnill. subglobosis paulum depressis, ostiolo, minutissimo, 

 umbilicatis sed nunquam collapsis, duriusculis, coriaceis, atris, pi- 

 losis; pilis concoloribus inferne laxis, superne rigidis, elegantissi- 

 me radiatim divergentibus; ascis valde elongatis, angustis, subtu- 

 bulosis, 136-5 60 - 14-17, stipite brevi; sporidiis 8 distincte oblique 

 monostichis, clavato-oblongis ob partem superiorem parum pro- 

 tuberantem, plerumque rectis sed ssepe inasquilateralibus, utrinque 

 acutiusculis vel acutis, transverse (maturis) 7-septatis medio valde 

 constrictis, sepimento in longitudine uno ssepe imperfecto, 22-26 



