Sphaeriaceae, Hyalodidymae, Diaporthe. 653 



globulosis, vix y^ raill. diam; ostiolis corticem perforaatibus, pa- 

 rumque excedentibus ; ascis fusoideis, 45-50 ^ 8-9, aparaphysatis, 

 octosporis; sporidiis distichis, oblongis, 14-15 ^; 4, utrinque obtu- 

 siusculis, constricto-1-septatis, 2-4-guttulatis, hyalinis. 



Hab. in caulibus emortuis Tagetum hortensiura, Conegliano, 

 Ital. bor. — Species Diaporthi A7'ciii (Lasch) Nits. aflfinis. 



158. D. Euporthe immersa (Fuck.) Nits. Pyr. Germ. p. 270, Sphce- 25io 

 ria immersa Fuck. Fungi rhen. n. 1795. — Stromate latissime 

 effuso, caules ambiente eorumque superficiem colore ex cinereo 

 sordide atque opace fuscescente tingente intus undique nigrolimi- 

 tato; peritheciis minutissimis, globosis vel depressis, ligoi strato 

 supremo totis immersis, laxe atque ordine subaequali vel fere li- 

 neari dispositis in coUum abrupte attenuatis ; ostiolis plus minus 

 exsertis, punctiformibus, mox abbreviatis rotundatis, raox subco- 

 nicis; ascis clavatis v. oblongis. octosporis, .50ii8; sporidiis disti- 

 chis, raro oblique monostichis, fusiforraibus. obtusiusculis, rectis, 

 hyalinis, bicellularibus, quadriguttatis, 10-12^^3-4. — Spermogo. 



nia phomatoidea; sperraatiis 6-7 i; 2-2,5; basidiis filiformi-arcua' 

 tis, 34 =: 1. 



Eab. in caulibus Lappae rainoris emortuis in Germania. 



159. D. Euporthe Acus (Blox.) Cooke Grevill. VII, p. 81, Sphceria 25n 

 Acus Blox in Curr. Linn. Trans. XXII, p. 325, t. 58, fig. 93. — 

 Peritheciis minutis subglobosis, depressis, tectis, ostiolis perforanti- 

 bus, emergentibus acicularibus ; sporidiis distichis v. stipatis, an- 

 guste-cymbiforraibus, 2-4 nucleatis, 7,5-10 y.. longis, dein 1-sep- 

 tatis vix constrictis. 



Hab. in caule Lapparum in Britannia. 



160. D. Euporthe Arctii (Lasch) Nits. Pyr. Germ. p. 268, Sphceria 2512 

 Arciii Lasch in Kl. Herb. raycoL n. 1046. — Stroraate plus rai- 

 nus late effuso, saspissime arabiente caulesque longe lateque in su- 

 perficie tandera nigrificante v. rarius peridermio cinerascente, immo 

 omnino non decolorato, ostiolis exasperato tecto, parte iramersa 

 strato extimo, nigricante cincto ; peritheciis exiguis ordine vario 



sed in plerisque laxe sparsis, multo rarius hinc inde dense stipa- 

 tis, globosis V. depressis, ligni substantiae omnino immersis, in col- 

 lum tenuissimura abrupte attenuatis ; ostiolis raodo elongatis, te- 

 nuissirae cylindricis v. basim versus paullo incrassatis, rectiusculis 

 V. saepius, flexuosis v. secundis, modo abbreviatis, conicis, immo 

 hemisphaericis, punctiformibus, pertusis ; ascis oblongis v. rarius 

 clavatis sessilibus, octosporis, plerumque 40-50^:6-9; sporidiis sub- 



