Sphaeriacese, Hyalodidymas, Diaporthe. 681 



quadriguttatis, medio septifero haud constrictis, rectis, 13-16:; 3- 

 4. — Sperraogonia sistunt Phomam sticticain B. et Br. 



Hab. in ramis siccis Buxi sempervirentis in Germania, 

 Gallia et Italia. 



247. D. Tetrastaga spissa Sacc et Sp. Mich I, p. 385. — Stroma- 2599 

 te obsoleto nuUove ; peritheciis dense gregariis, corticolis, globu- 

 losis, Y3 mill. diam., ostiolis breve excedentibus, rostellatis; ascis 

 fusoideis, utrinque obtusiusculis, 40-45 :; 7-8, aparaphysatis, octo- 

 sporis; sporidiis dlstichis v. oblique monostichis, fusoideis curvulis, 

 10-11 sSV^, raedio constrictis, utrinque obtusiusculis, 4-guttula- 



tis, hyalinis. 



Hab. in ramulis junioribus Catalpae syringifoliae, Cone- 

 gliano, Ital. bor. 



248. D. Tetrastaga velata (Pers.) Nits. Pyr. Germ. p. 287. SphcB- 2600 

 ria velata Pers. Syn. p. 32. — Stromate latissime effuso, ramu- 

 los, ramosque crassiores longissime ambiente, intus lineis atris, 

 varie flexuosis lignum marmorante nec non corticis interioris su- 

 perficiem tandem ex sordide brunneo nigrificaute; peritheciis par- 

 vulis, e globoso mox plus minus depressis, irarao lentiformibus, 

 corticis interioris strato supremo, raro profundius infossis, ordine 

 fere aequali ac satis dense sparsis, passim 2-4 aggregatis, in col- 

 lum plerumque brevissimum abrupte attenuatis; ostiolis crassiu- 

 sculis, breviter elongatis, parum tantum vel vix exertis, cylindri- 



cis V. basim versus incrassatis, singulatim v. rarius 2-6 immo plu- 

 ribus gregatim erumpentibus, raro sub peridermio relaxato solito 

 longioribus, decumbentibus, rarissime longe exertis ; ascis anguste 

 fusiformibus v. subcylindricis, octosporis, subsessilibus, 56-64 s 8- 

 10; sporidiis distichis v. rarius oblique monostichis, anguste fusi- 

 formibus, obtusiusculis, imrao subcylindricis, plerumque rectis hya- 

 linis, quadriguttatis, 2-(4?)-ceIlularibus, rarissime medio tandem 

 parum constrictis, 10-15^:3. Spermogonia phomatoidea ; spermatiis 

 7-9 =; 2, biguttatis; basidiis 24-27^1, hamatis. 



Hab. in ramis corticatis Tiliae in Germania, Gallia, Italia, 

 Britannia, Suecia et Amer. bor. 

 249. E. Tetrastaga Corni Fuck. Syrab. rajc. p. 207, t. VI, fig. 39. gg^j 

 — Peritlieciis ascigeris in corticis stroraate nidulantibus, minutis, 

 globosis, tenuissimis, nucleo sordido, ostiolis vix exertis, raro lon- 

 gioribus, cylindraceis, obtusis, atris; ascis lanceolato-clavatis, sti- 

 pitatis, Ssporis, 60^8; sporidiis distichis, lanceolato-fusiformibus, 

 sed utrinque obtusis, curvatis, 4guttulatis, hyalinis, 13^:4, utrinque 



