Pyrenomycetese, Sphaeriacese, Phaeodidymae, Didymosphseria. 7:^7 



matrice circa ostiolum fuscescente ; ascis tereti-clavatis, apice late 

 rotundatis, 8-sporis, 140-150 5 27-30; paraphysibus filiformibus se- 

 ptatis ascos superantibus ; sporidiis 1-2-seriatis, obovato-oblongis, 

 medio septatis leviterque constrictis, pallide fuliginosis, pellucidis, 

 28-30^12-14. 



Hab. in culmis Ammophilae arenariaepr. Haraburg Germa- 

 niae, socid Lepiosph. Ammophikfi (in Rehm Ascora. n. 691). 



41. Didymosphaeria lusitanica (Niessl) Berl. et Vogl. Add. Syll. p. 115, soie 

 Phorcija lusitanica Niessl Contr. Fl. Myc. Lus. p. 15. — Perithe- 

 ciis sparsis, omnino immersis, clypeatis, raajusculis, 0,4-0,5 ram. 

 diam., globosis, atris, ostiolo rainuto; ascis elongato-cylindricis, pe- 

 dicellatis, membrana interna apice valde incrassata, 8-sporis, 120- 

 140;; 10-12; sporidiis raonostichis, oblongis, utrinque rotundatis, 

 plerunique curvatis vel quasi raedio infractis, uniseptatis et valde 

 constrictis, guttulis binis, atro-fuscis, 18-22 ::; 8-10; paraphysibus 

 tenuibus, apice ramosis; ascis sporidiisque ut in Delitschia, sed 

 peritheciis profunde innatis, tectis. 



Hab. in culmis aridis Donacis arundinacese, Galla prope 

 Figueira da Foz Lusitaniae (Moller). 



42. Didymosphaeria rhytidosperma Speg. Fungi Guar. Pug. I, n. 223. 30i7 

 — Peritheciis sparsis v. laxissime subseriatis, epidermide areola- 



tira nigrefacta tectis eique arcte adnatis, prorainulis, hemisphaerico- 

 lenticularibus, raajusculis, 1-1,2 ram. diara., ostiolo rainuto, umbo- 

 natulo, vix epiderraidera perforante, uon exserto donatis, crassiu- 

 scule raerabranaceo-carnosulis, sordide albescenti-ceraceis, circa 

 ostiolura fuscescentibus ssRpeque coriacellis, contextu prosenchy- 

 matico-fibrosulo, subradiante, parura distincto, albo-fuscescente ; 

 ascis cylindraceis, apice obtusissirae rotundatis, postice breve atte- 

 nuato-stipitatis, 120-130* 7-8, jodii ope nulla, paraphysibus gracil- 

 limis, obscure septulatis obvallatis, 8-sporis,- sporidiis recte mono- 

 stichis, utrinque acute rotundatis, rectis, raedio constrictis; loculis 

 sequalibus, non v. 1-2 crasse guttulatis, episporio pellucido, pulchre 

 fuligineo, longitudinaliter dense rugoso-striatis, rugis siraplicibus, 

 rectis v. vix helicoideis. 



Hab. ad culraos dejectos emortuos Barabusaceae cujusdam 

 in duraetis prope Carapegua Bras. — Species pulcherrima ao di- 

 stiuctissiraa, characteribus perithecii subnectriacei, facile novura 

 genus inter Nectriaceas coustituens. 



47 



