Sphaeriacese, Hyalodidymae, Diaporthe. 613 



sis, teretibus, longis, circiter 1 mill.; ascis fusoideo-elongatis, ses- 

 silibus, 45 i; G, octosporis; sporidiis distichis, fusoideo-elong.itis, vul- 

 go leviter curvulis, 4-guttulatis vel spurie tenuiter l-(3?)-septa- 

 tis, chlorino-hyalinis, 12-14 ^; 2-3. 



Hab. in ramis emortuis Betulse albge prope oppid. Abo 

 Fennia?. 



22. D. Chorostate platasca (Peck) Sacc. Diatrype plala^ca Peck 2374 

 27 Rep. pag. 101), — Stromate suborbieulari, niinuto, erumpente, 

 nigro ; ostiolis elongatis, tenuibns, saepe leniter curvis cylindricis; 

 ascis oblongis v. fusoideis, valde crassis; sporidiis stipatis, liyali- 

 nis, oblongis, uniseptatis, quadrinucleatis, 12-15 y.. long. 



Hab. in Amer. bor. Adirondack, in ramis emortuis Betula?. 



23. D. Chorostate aristata (Fr.) Karst. Myc. Fenn. II, p. \\2.SphcF- 2375 

 ria arislata Fr. S. M. II, p, 363, Diatrype aristata Fr. Summa 



V. S. p. 385. — Stromate diatrypeo, immerso, per peridermium la- 

 ciniatim fissum transversim erumpente, plerumque oblongato con- 

 vexo vel plano, disco saepe tuberculoso, atro, opaco, intus albo, de- 

 mum albido-fuscescente, crassiusculo, latit. circiter 5 mill.; peri- 

 theciis in singulo stromate plerumque 12, demersis, mono- vel di- 

 stichis, subspha?roideis, majusculis; ostiolis exsertis, rostellatis, di- 

 stantibus, divergentibus, teretibus, aequalibus, Isevibus, longis, facile 

 diffractis, atris; ascis sessilibus, fusoideo-elongatis, 48-60^:11-12, 

 octosporis; sporidiis distichis, fusoideo-elongatis, ut plurimum cur- 

 vulis, 2-4-guttulatis vel uniseptatis, chlorino-hyalinis, 12-18 ^: 3-4. 

 Hab. in ramis exsiccatis Betula? nanoe in Norvegia, Lappo- 

 nia et Fennia. 



24. D. Chorostate Strumella (Fr.) Fuck. Symb. myc. p. 205. Sphcu- 237G 

 ria Slrumella Fr. S. M. I', p. 365. Diatrype Strumella Fr. Sum- 



ma Veg. Sc. p. 38.5. Sph. olimoea Ehrenb. Sylv;e p. 16. Sph. ten- 

 taculata Batsch Cont. I, fig. 183 (?). — Stromate orbiculari, de- 

 presso, cortice immutato formato, peridermio tecto; peritheciis in 

 singulo stromate numerosis (circiter 12), in stromate in orbem dis- 

 positis, basi ssepe ligno adnatis, spha^roideis, parvulis; ostiolis in 

 disco, per peridermium transversim erumpente, planiusculo, lanci- 

 formi vel suborbiculari vel lineari, atro exsertis, distantibus vel 

 confertis, cylindraceis, plerumque abbreviatis, sed interdum lon- 

 giusculis, rostellatis, subtortis; ascis sessilibus, fusoideo-elongatis, 

 40-52^:7-9, octosporis; sporidiis distichis, fusoideo-elongatis, ple- 

 rumque curvulis 4-guttulatis l-^^^^-septatis medio hand constri- 

 ctis, chlorino-hyalinis, 12-18 ^3-4. 



