Sphseriacese, Hyalosporae, Wallrothiella. 455 



Mont. Syll. Crypt. n. 792 et Guy., n. 558. — Byssiseda; perithe- 

 ciis minutissimis globosis gregatim confertis, lasvibus, nigris, epa- 

 pillatis, raox centro depressis, late pertusis, subiculo concolori te- 

 nui cinctis; fibris subiculi septatis, in raraos- breves aculeiformes 

 divisis ; sporidiis ovoideo-cyrabiforraibus, exiguis, 5-6,5 [j.. longis, 

 2-guttulatis. 



Hab. ad cortices et ligna arborum, Cayenna (Leprieur), Ceylon 

 (Berk.), in Acere, Quercu, Myrica in Amer. bor. (Ravenel). 



WALLROTHIELLA Sacc. (Etym. ab iU. F. G. Wallroth). — Peri- 

 thecia superficialia, globulosa, glabra, nigra. Asci teretiusculi, octo- 

 spori. Sporidia ovoidea vel suboblonga, continua, hyalina. — Est 

 quasi Rosellinia (Coniomela) sed hyalospora. 



1. Wallrothiella congregata (Wallr.) Sacc. S^ph. congregata Wallr. i755 

 Comp. 786, Mont. Pl. Cell. Cent. VIII, p. 61. — Peritheciis rainu- 

 tissirais, confertissimis , cubilibus laxe adhserentibus , subrotundis 

 atris, nitidis, subtilissime rugulosis, vertice depresso tenuiter pa- 

 pillato demum pertusis, nucleo albido tenui farctis ; ascis cylindricis, 

 minutis 20 ^ 2, octosporis ; sporidiis globulosis, 2 [}.. diam., raono- 

 stichis, hyalinis. 



Hab. ad ligna salicina putredine exesa, Thuringia in Ger- 

 raania. 



2. Wallrothiella Arceuthobil (Peck) Sacc. Sph. ArceutJwbii Peck, 17 1753 

 Rep. p. 111, t. I, fig. 10-14. — Peritheciis rainutis, dense casspi- 

 tosis, oblongis vel cylindraceis, obtusissirais, nitidis, nigris ; ascis 

 subclavatis, fugacibus ; sporidiis sparsis, globosis, hyalinis 4 a. d. 



Hab. in Araer. bor. Forestburgh in capsulis A r c e u t h b i i 

 p u s i 11 i . — Perithecia subastoraa, bombardioidea. 



3. Wallrothiella minima (Fuck.) Sacc. RoselUnia minima Fuck. Symb. 1757 

 myc. p. 149. — Peritheciis gregariis, minutissimis, globoso-conicis, 

 subtilissime, papillatis, atris, opacis, parce concolori-setulosis, sub- 

 glabrisve; ascis in cirrhos, candidos expulsis, cylindraceis, stipita- 



tis, Ssporis, 48 ^ 4-6 ; sporidiis oblique raonostichis, oblongD-ovatis 

 cylindraceisve, monoplastis, hyalinis, 8 ^; 3 ; paraphysibus linearibus 

 seu attenuatis, asci longitudine. 



Hab. in ramis decorticatis Betulaj albae, rarius, prope Map- 

 pen Germanise. 



4. Wallrothiella macilenta (Cooke) Sacc. Cucurbitaria macilenta 1753 

 Cooke Grev. VII, 4. — Csespitulis minimis, erumpentibus; peri- 

 theciis atris, papillatis, sub-nitidis, sicco collapsis ; ascis cylindra- 



