Sphseriaceae, Hyalodidymae, Diaporthe. 683 



excurrente, nigrolimitato; peritheciis discretis, globosis, Y3-Y4 mill. 

 diam., ligno decorticato vel corticato totaliter vel semiimmersis, 

 ostiolis brevibus, cylindraceo-conoideis, obtusis, exertis; ascis ob- 

 longo-fusoideis, 65-75^:10, octosporis, aparaphysatis ; sporidiis di- 

 stichis vel obliqne monostichis, elliptico-elongatis, 12-14 :=; 4-4^2, 

 utrinque rotundatis, medio constricto-1-septatis, 2-6-guttulatis, 

 hyalinis. 



Hab. in ramulis emortuis Mahonise Aquifolii, Conegliano 

 Italia bor. 



254. D. Tetrastaga pungens Nits. Pyr. Germ. p. 296, D. Sirumella ^m 

 var. pungens Karst. Myc. Fenn. II, p. 113. — Stroraate longe 

 lateque eflfuso, ambiente, ramorum cortici lignoque oranino innato, 

 superficiem corticis interioris vel ligni tantum nigrificante; peri- 

 theciis ordine subsequali distributis, passim densius aggregatis, sphse- 

 roideis, cortici crassiori v. ligno infossis ; ostiolis cylindraceis, haud 

 raro nodulosis, flexuosis, singulatim vel gregatira per periderraium 

 fissum erumpentibus, vulgo maxime elongatis vel longissime exser- 

 tis; ascis anguste clavatis, octosporis, 54-60^7-8; sporidiis fusoi- 

 deo~elongatis, rectis vel leviter curvulis, 12-16 ^ 3-4. 



Hab. in ramis crassioribus Ribis Grossulariaein Germa- 

 nia et Ribis nigri in Fennia. — Diap. pungens Nits. ut nobis 

 videtur, varietas est tantum Diap. StrumellcE (Fr.), orta in trun- 

 cis ramisque crassioribus locis humidis dejectis (Karst, 1. c). 



255. D. Tetrastaga mitis Sacc. Mich. II, p. 61. — Stroraate efifuso 2607 

 obsoleto; peritheciis laxe gregariis, cortice nidulantibus, tumidulis- 

 que, globoso-depressis, Ys "^i^l- diam., ostiolis, brevissime conoi- 

 deis; ascis fusoideis, 70-75^9-10, apice bifoveolatis, aparaphysa- 



tis, octosporis; sporidiis fusoideis, utrinque acutiusculis curvulis, 

 15 i; 3-4, constricto-1-septatis, 4-guttulatis, hyalinis. 



Hab. in rarais Ribis rubri corticatis prope Rouen Gallise 

 (Letendre). — A Diap. pungenie Nits. (Ribis quoque incola) 

 dififert ostiolis abbreviatis, nec pungentibus, aliisque notis. 



256. D. Tetrastaga LandeghemiaB (West.) Nits. Pyr. Germ. p. 318, 26O8 

 Sphceria Landeghe?nice West. in Kickx Fl. I, p. 343. — Stro- 

 mate ambitu et raagnitudine raaxirae vario, mox ramulos ambiente, 

 raox contra, et quidera saepius, brevi, maculseformi, substrato orani- 



no iramerso, strato extimo, nigricante, saepe usque in medullam 

 centralera descendente undique circumscripto, peridermio haud raro 

 relaxato, peritheciorum ostiolis perforato, ceterura non decolorato 

 obducto ; peritheciis minutls, e globoso depressis, lentiformibus, ple- 



