Sphaeriaceae, AUantosporae, Di£ltrypella. 203 



vatis, 28-32 p.. longis, in sterigmatibus brevissimis, parce ramosis, 

 solitarie acrogenis. 



Hab. in rsLmis Alni incanne et A. glutinosae in Britannia, 

 Fennia, Germalia, Italia, Amer. bor. — Sec. cl. Karsten D. fava- 

 cea, verruciformis, nigro-annulata et Tocciwana non satis spe- 

 cifice differunt. — Forte a D. Tocciceana non differt D. alnifraga 

 Ces. Hedw 1856, p. 104, t. XIV, fig. D. 



6. Diatrypella protrusa (Pr.) Sphcerosperma protusum Pr. Fungi 748 

 Hoyersw. n. 30. — Peritheciis globosis, magnis, cum collis ostio- 

 latis, sublageniformibus, convergentibus, lineam nigram variam cir- 

 cumscribentibus, basi in stromate e matre formato, immersis, in 

 disco albo, minuto tectum, prominulis; ascis clavatis, longis, tum 

 apice perviis, inter paraphyses; sporidiis fusiformibus, utrinque 

 rotundatis curvatis, minutis, albis, plurimis. 



Hab. in cortice Alni, Hoyerswerda (Germania). — An diversa 

 a D. Tocciceana? 



7. Diatrypella decorata Nits. Pyr. Germ. p. 79, Microstoma vulgare 749 

 Auersw. — Stroraate transversim erumpente, peridermio valvatim 



vel varie fisso cincto, vertice nudo, planiusculo vel convexulo, elli- 

 psoideo, subinde fere orbiculari, ex fusco sordide nigricante, intus 

 albido, discreto, raro confluente, minuto, 2-2,5 mill. lat. ; peritheciis 

 6-12 in singulo stromate, monostichis, ovoideis vel subspheeroideis, 

 dense stipatis mutuaque pressione angulatis, ostiolis parum vel vix 

 prominulis, quadrisulcatis, stelliformibus, exiguis instructis ; ascis 

 cylindraceo-clavatis, longissime pedicellatis, 40-50 ^; 5 p. sporif. ; 

 sporidiis curvulis vel subrectis, dilute fuscescentibus, 4-6 ^jI. 



flaft. in ramis corticatis putrescentibus Betulse albae in Ger- 

 mania, Gallia, Fennia. — Cum B. verruciformi multum commune 

 habet; differens tamen stromatibus minoribus, mox fuscescentibus, 

 ascis sporidiisque multo minoribus. 



8. Diatrypella exigua Wint. Myk. Not. Hedw. 1874, p. 133. — Stro- 750 

 matibus minutissimis, e basi subcirculari v. elliptica verruciformi- 

 bus, erumpentibus, peridermio fisso cinctis, intus pallidis; perithe- 

 ciis in quoque stromate 2-10, subglobosis; coUis brevibus; ostiolis 

 papillatis, non exsertis, 4-6-sulcatis, 300 a. diam. ; ascis tereti- 

 clavatis, longe stipitatis, totis 110-150 ^^ 12, myriosporis; sporidiis 

 conglobatis allantoideis, curvulis, 8 ^; 1 ,5, f uscidulis. 



Hab. in ramulis Salicis, prope Halle (Germania). — B. de- 

 coratce affinis, sed multo minor. 



9. Diatrypella pulvinata Nits. Pyr. Germ. p. 72, Sphceria v. Dia- 751 



