Sphteviaceje. Phasodidymje, Didymosphferia. 707 



Hab. in sarmeiitis piitridis Rubi fruticosi, Finistere Galli^e. 



25. Didymosphaeria Betulae (Niessl) Sacc, Phorcys Beiulce Niessl Not. 266s 

 Pyr. p. 41. — Peritheciis sparsis, innatis, peridermio turgido te- 

 ctis, araplis, % mill. diara., ellipsoideis, carbonaceis, atris, ostiolo 

 minuto parura erumpente; ascis valde elongatis, tubulosis, raem- 

 brana interna apice incrassata perforataque, stipite brevi 200-250 

 i;20; sporidiis 8 oblique raonostichis, oblongis vel cylindraceo-ob- 

 longis raedio septatis constrictisque, rectis, utrinque obtuse rotun- 

 datis, atro-fuscis, subopacis 23-26:^8-9; paraphysibus crassis, gut- 

 tulatis, siraplicibus. 



Hab. in ramis emortuis Betula^ albse, Rastatt Gerraani?e 

 (ScHROTER). — Sec. Niessl 1. c. genus Phorcis distinguitur: asco- 

 rura raerabrana interna apice incrassata perforataque : paraphysi- 

 bus distinctis; sporidiis didymis, (hucusque) fuscis v. nigricautibus. 



26. Didymosphaeria anaxaea Sacc. Fungi Ven. Ser. II, p. 325, Fungi ~^^^ 

 ital. t. 134. — Peritheciis reraote gregariis, prirao epiderraide ve- 

 latis, dein seraierumpentibus, globoso-lenticularibus, 120 y.. diam., 

 atris, ostiolo vix papillato auguste pertuso; contextu parenchyma- 

 tico laxiusculo, fuligineo: ascis clavatis, apice rotundatis, longius- 

 cule attenuato-stipitatis, quandoque ima basi nodulosis, 100=; 10, 

 paraphysibus filiformibus obvallatis, 8-sporis ; sporidiis oblique mo- 

 nostichis v. distichis, oblougo-clavatis, curvulis, 25-27 ^ 6, bilocu- 

 laribus. loculo supero breviore crassiore rotundato, infero subpy- 

 ramidato acutiusculo, ad septura leniter constrictis, minute pluri- 

 guttulatis, olivaceo-fuligineis (initio simplicibus, clavulatis, 4-gut- 

 tulatis hyalinis). 



iT(2&. in calamis Scirpi Holoschoeni in alveo fluminis Pia- 

 ve (Anaxum), Covolo pr. Treviso, Ital. bor. — Ob forraara pecu* 

 liarem sporidiorum facile dignoscitur. 



27. Didymosphaeria polysticta (B. et C) Sacc, Sph(Bria polysticta 2n7o 

 B. et C. North Amer. Fungi n. 945. — Ostiolo excepto, epider- 

 mide tecta; ascis linearibus; sporidiis oblongis uniseptatis, fuscis, 



7,5 ^ 3-3,5. 



Hab. in caule Srailacis in Araer bor. (Beaumont). — Peri- 

 thecia vix epiderraidem sublevant, nec nisi ostiola nigra puncti- 

 formia conspicinntur. 



28. Didymosphaeria smaragdina (Ces.) Sacc, Sphceria smaragdina 267i 

 Ces. in Rabh. F. E. 265'-). — Peritheciis depresse globosis, epi- 

 dermide tectis, demura vertice perforato erumpentibus, contextu 

 celluloso ; ascis grosse cylindiaceis, interdura leviter arcuatis, pa- 



