688 Sphasriaceae, Hyalodidyraae, Diaporthe. 



— Peritheciis laxe gregariis, fere totum ramulura occupantibus, 

 cortice imrautato imraersis ac eum pustulatum efficieutibus, atris, 

 membranaceis, contextu dense parenchymatico, ostiolo conico, atro, 

 carbonaceo, non v. vix supra matricem exerto ornatis, Ys-Y^ mill. 

 diam. ; ascis fusiforrai-clavatis, apice obtusiusculis, deorsum acu- 

 tiuscule attenuatis, 50-60 ::; 7-8, octosporis, aparaphysatis ; sporidiis 

 oblique distichis, elongato-ellipticis. utrinque acutiuscule rotunda- 

 tis. medio 1-septato-constrictis, 4-guttulatis, hyalinis, 13-14 s 4-5. 

 Hab. in ramulis dejectis Salicis Humboldtianae in nerao- 

 rosis prope la Recoleta, Argent. Araer. raerid. 



2t)2. D. Tetrastaga exasperans Nits. Pyr. Gerra. pag. 289. — Stro- 

 mate effuso, raraos tenues interdura arabiente, sa^pius contra brevi, 

 maculasformi, immo hic illic, peritheciis dense aggregatis, valseum 

 a?mulante, strato extimo tenuissimo, aterrimo undique limitato, cor- 

 tice ostiolis nigro-punctato arcte adhx'rente tecto; peritheciis mi- 

 nutissimis, corticis interioris parenchymati totis imraersis, nonnum- 

 quam parum protuberantibus , e globoso mox maxinie depressis, 

 in collum pertenue, brevissiraum abrupte attenuatis, ordine subae- 

 quali sparsis vel 2-5 densius aggregatis; ostiolis in plerisque pa- 

 rum tantum elongatis, cylindricis vel subconicis, peridermium per- 

 foratum vix superantibus, multo rarius maxime elongantis, cylin- 

 dricis, tenuissimis, s?epe fasciculatim erumpentibus, longe extanti- 

 bus, flexuosis vel secundis; ascis clavatis vel oblongis, octosporis, 

 56-68 w 8-10; sporidiis subdistichis, bicellularibus, quadriguttatis, 

 fusiformibus vel subcylindricis, utrinque obtusissimis, rectis vel ra- 

 rius parum curvatis, medio tandem constrictis, hyalinis, 14-16 

 ^ 4-5. 



Hah. in ramis emortuis Betul;\j albie prope Mlinster et (E- 

 .strich Germania'. 



263. D. Tetrastaga macrostoma xNits. Pyr. Germ. p. 284. — Stro- 

 mate latissinie effuso, ranios ipsos crassiores stepe ambiente, cor- 

 tici lignoque supposito specie haud mutato toto innato, nigrolimi- 

 tato, peridermio ostiolis erumpentibus lacerato, passim desquamato, 

 ceterum non decolorato tecto, peritheciis ordine vario sparsis, saepe 

 10-20 dense aggregatis, subglobosis vel depressis in corticis sub- 

 stantia infima nidulantibus; ostiolis plerumque vaide elongatis, cras- 

 siusculis cylindricis vel basim versus parum sensiraque incrassatis, 

 hic illic nodulosis, rugulosis, saepe decumbentibus varieque flexuo- 

 bis; ascis clavatis vel anguste oblongis, octosporis; sporidiis sub- 

 distichis, fusiforraibus, utrinque obtusiusculis, bicellularibus, qua- 



