Sphseriacese, Phaeosporse, Xylaria. 341 



mycelio albo-fibroso, sub-arachnoideo vestitis; clavulis, l-iy^ cent. 

 alt., basi subteretibus undulato-gibbulosis et perithecigeris, 3-4 

 rnill. long., sursum sterilibus compressis, apice obtuso vol acuto, 

 integro vel lobulato donatis, quandoque strato conidiophoro griseo- 

 croceo vestitis, minute ruguloso-foveolatis, extus atris, intus albis; 

 ascis clavatis, sursum acutiusculo rotundatis, deorsum in pedicellum 

 longiusculum attenuatis, 90-100 ^; 18-20, octosporis, paraphysibus fi- 

 liformibus crebris obvallatis; sporidiis distichis vel inferne monosti- 

 chis, elliptico-elongatis, 15i;5, utrinque attenuato-rotundatis ac 

 uniguttulatis, inaequilaterali-cymbiformibus, dilute griseo-fuscis. 



Hab. in trunco dejecto subputrescente Salicis Humbold- 

 tianae secus Rio de la Plata, cerca de la Recoleta, Argent. Ame- 

 ricse australis. 



141. Xylaria cristata Speg. Fung. Arg. I. p. 179. — Stromatibus, 1^90 

 1-2,5 cent. alt., solitariis, sparsis, rarius 2-5 gregariis vel 2-con- 

 natis; stipite brevi, quandoque deflcienti compresso vel tereti, gla- 

 bro, ruguloso, atro; clavula subtereti, undulato-gibbulosa, ob pe- 

 rithecia prominula scabrosula, intus alba in apicem, parti perithe- 

 cigerse subsequilongum, sterilem quandoque (sed rarius) teretem 

 quandoque, saepius, compressum 2-5 laciuiato-cristatum, albido- 

 roseo-croceum, conidiis vestitum, producta; peritheciis stromati im- 

 mersis, globulosis, e mutua pressione quandoque angulosis, Y4-V5 

 mill. diam., atris, ostiolo inconspicuo perforatis ; ascis cylindraceis, 



70 i; 6-8 p. sporif., 30^:5 ped.; apice rotundatis in stipitem deor- 

 sum attenuatis, octosporis, aparaphysatis(?); sporidiis oblique mo- 

 nostichis, elongato-navicularibus, 12-15:^4-5, utrinque obtusius- 

 culis, granuloso-farctis, opace fuligineis. 



Hab. ad caudices vetustos eraortuos Salicis Humboldtia- 

 nfe in umbrosis secus Rio de la Plata a la Recoleta, Argent. 



142. Xylaria coccophora Mont. Syll. Crypt. n. 699 et Guy., mss., 1291 

 n. 502. — Dichotoma, suberosa, tereti-compressa, gracilis; stipite 

 atro, axillis dilatato-complanato ; clavulis teretibus apice mucro- 

 natis torulosis velo fulvo rimuloso primitus- vestitis; peritheciis 

 prominulo-exsertis ; ascis cito diffluentibus, octosporis; sporidiis 

 insequaliter cymbiformibus, 10 a. longis. 



Hab. ad ligna putrida, Cayenna (Lkprieur). 



143. Xylaria vaporaria Berk. Curr. Linn. Trans. XXIV, t. 25, f. 17, 1299 

 26. — Stromate sclerotioideo, suberoso, rugoso, irregulari, sursum 

 protuberantiis brevibus terminato; clavulis conicis stipitatis, tantum 



. inferius peritheciophoris, atris. sursum attenuatis, pulverulentis. 



