52 



181. Nectria Mantuana Sacc. sp. nov. Peritheciis gre- 

 gariis, superiicialibus, e globoso dcpressis, vertice de- 

 mum levitcr umbilicatis, diam. 150 micr., rufis, undi- 

 que breve sed distincte albido-pilosis, contextu laxi- 

 uscule cellulari, sordide carneo; ascis cylindraceo-clavatis, 

 80-90 * 7, deorsum attenuatis, apice, lumine initio 

 2-foveolato, obtusatis, pseudoparaphysibus filiformibus 

 obvallatis, octosporis; sporidiis oblique monostichis v. 

 distichis, oblongis ad medium leniter constrictis, curvu- 

 lis, 12 * 3 ] / 2 -4, 4-guttulatis, dein 1-septatis, hyalinis. 



\hih. in ligno decorticato populeo a Miglia- 

 retto (prov. di Mantova), Febr. 1873 (Com. A. Ma- 



( iNAGUTI-RONDlNlNl). 



Obs. Peritheciis sparsis, rufis, pilosellis, nobilis hsec 

 species statim dignoscitur. 



182. Calonectria varians Sacc. sp. nov. Peritheciis su- 

 perficialibus, plerumque circum stroma crassiusculum 

 pallidum aggregatis, rarius, stromate fere deficienti, 

 subsparsis e globoso conoideis v. subangulosis, aquose 

 carneis, la^vibus, ostiolo acutiusculo, denique leviter 

 collabescentibus; perithecii contextu distincte laxe pa- 

 renchymatico, roseo ; ascis cylindraceo-fusoideis, 80- 

 100 * 12-15, deorsum attenuatis, lumine apice coar- 

 ctato, aparaphysatis, octosporis; sporidiis oblique mo- 

 nostichis vel distichis, fusoideis, 20-24 * 7, rectis cur- 

 vulisve, utrinque obtusiusculis, 3-septatis, ad septa 

 constrictis, hyalinis. 



Hab. in ramis putrescentibus corticatis Mori 

 albae, socia Botn/osphceria pulicari fi morlcola, a 

 Selva Aug. 1876/ 



Obs. Cum speciebus permultis comparavi, sed cum 

 nulla perfecte quaclrat. C. Fuckelii (Nke) Sacc. huic 

 paululum accedit. 



Dothideaceze Nke 



L83. Mazzantia Galii (Guep.) Mtgn. Syll. 240. 



ffab. in caulibus putrescentibus Galii sylva- 

 i i c i in svlva Montello, Sept. 1875, rarius. 



