] ANALES DE LA SOCIEDAD CIENTÍFICA ARGENTINA 



(150-180 fliam.), laxe constipata, parum a snbstantia stro- 

 matica distiucta, ostiolo perforato stromatis superficiem attin- 

 gente ac minute papillato-prominiilo donata ; asci cylindracei 

 V. subfusoideo-cylindracei, ápice crassissime tnnicati, luce 

 refracta 1-foveolati, basi breviter crasseque attenuato-pedicel- 

 lati (130-150x5-7), octospori, aparaphysati ; sporae fasci- 

 culatae, ascorum loiigitudine, filiformes-, mox in articnlis 

 (3-7x1 ), utrinque truncatis, grosse 2-4 guttulatis secedentes. 



Hab. Ad folia viva Euforbiaceae {Colliguaja spec.) in sylvis sub- 

 virgineis prope Villa-Rica, Feb. 1882 (sub num. 3546). 



Obs. Species pulcherrima ed ad Dothideaceas vergens; stromata 

 in foliis dejectis maturantia, sed facillime a matrice secedentia. 



DOTHIDEAGEAE Nítz. et Fllk. 



HYALOSPORAE SaCC. 



257. BOTRYOSPHAERIA BERENGERIANA DBtlS. = SüCC, Syll. Fung. I, 



n. 1763. 



Hab. Ad corticem ramorum putrescentium Populi v. Salicis íq 

 uliginosis prope Pam^Mari, Jul. 1883 (sub num. 3872). 



Obs. Stromata minuta dense gregaria, subseriatim ac irregulari- 

 ter rimóse erumpentia, atra, contextu majuscule parencliy- 

 matico, parum distincto saepeque opaco, fumoso-olivaceo v. 

 atro ; perithecia (an melius loculi?) non v. dubiose a stromatis 

 substantia distincta, globulosa (150diam.), ostiolo carbonaceo, 

 stroma perforante non v. vix papillato-donata ; asci toruloso- 

 clavati, autice rotundati, postice plus minusve attenuato-pedi- 

 cellati (65-70x15-16), aparaphysati, octospori; sporae di- 

 sticbae, ellipticae v. subellipticae, utrinque plus minusve 

 obtusatae (19-22x10-11 ), 2-guttulatae v. granuloso-farctae, 

 hyalinae. 



Specimina guaranitica veré Dothideacea nec Spbaeriacea, ut 

 europea, habitu externo tamen atque cliaracteribus fructifica- 

 tionis perfecte congruentia. An novum genus et species ? an 

 varietas v. forma tantum ? 



(Continuará) . 



