133 



missis, comparata nullum discrimen inter illa reperire 

 potui, etsi secundum diagnoses auctorum species mea a 

 caeteris certe distincta ! An species unica tantum nonnihil 

 variabilis ac saepius imperfecte descripta? Sporidia fusoi- 

 deo-navicularia (27-30 X 6-8 /^) non v. grosse 1-2-guttu- 

 lata, opace fuliginea, per aetatem longitudinaliter rimosa. 



262. Xylaria hypoxylon (L.) Grev. Sacc, Syll. pyr. vol. I, 

 f. 333. 



Hab. Ad truncos dejectos putrescentes in sylvis prope 

 Apiahy, Hiem. 1888 (subn. 2350-2354). 



Obs. Forma conidiophora atque ascophora. Asci cylindracei 

 antice rotundati postice attenuato-pedicellati (p. sp. 60- 

 65 X 5-6 /^ ped. 25-30 X 2-3 /-t) octospori aparaphy- 

 sati ; sporidia oblique v. subrecte monosticha navicularia 

 (8-iO X 4-5 !') fuliginea. Conidia pulverulenta elliptico- 

 cylindracea (8-10 X 2-3 /^) utrinque obtusiuscula non v. 

 leniter inaequilateralia hyalina. 



263. Xylaria venosula Speg. (n. sp.) 



Diag. Xylodactyla ; minuta cylindracea crusta cinerascente 

 reticulato-rimosa tecta, mucrone sterili donata, stipite 

 sordide ochraceo-villoso suffulta ; perithecia omnino im- 

 mersa, ostiolo non v. vix exerto ; asci cylindracei octo- 

 spori aparaphysati ; sporidia mediocria eUiptico-navicu- 

 laria fuliginea. 



Hab. Ad caudices muscosos putrescentes in sylvis prope 

 Apiahy, per ann. 1881-88 (sub n. 1684-2360). 



Obs. Coespitosa ; clavulae cylindraceae teretes non v. undu- 

 latae utrinque abrupte coarctatae (5-10'" Ig. X 2,5-3'" 

 crs.) superne saepius in mucrone sterile acutoque (1-2'" 

 ]g.) productae, inferne stipite longiusculo tenui(5-15'" X 

 'I"'crs.)sordide rufo-villosulo suffultae, extus crusta sor- 

 dide fusco-cinerascente dense reticulato-rimulosa tectae, 

 rimulis fusco-ferrugineis tenuibus vix impressis rugulosis 



