— 511 — 



missis, comparata nullum discrimen inter illa reperire 

 potui, etsi secundum diagnoses auctorum species mea a 

 caeteris certa distincta ! An species única tantum nonnihil 

 variabilis ac saepius iraperfecte 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. Ascicylindracei 

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

 65 X 5-6 !■>■ — ped. 25-30 X 2-3 y) octospori aparaphy- 

 sati; sporidia oblique v. subrecte monosticha navicularia 

 (8-10 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 suft'ulta ; perithecia omnino im- 

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

 spori aparaphysati ; sporidia mediocria elliptico-navicu- 

 laria fuliginea. 



Hab. Ad caudices muscosos putrescentes in sylvis prope 

 Apialuj, 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'" 

 Ig.) productae, inferné stipite longiusculo tenui(5-15"' X 

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

 dide fusco-cinerascente dense reticulato-rimulosa tectae, 

 rimulis fusco-ferrugineis tenuibus vix impressis rugulosis 



