— 238 — 



Ding. Stromata corticola, primo tecta deiii erumpeatia ac 

 peridermii laciuiis ciiicta, párvula (1-1,5'" diam.), atra, 

 opaca, laevia, parum pulvinata sparsa v. gregaria ac 

 subseriato-subcouflueiitia, carbouacea, coutextu indi- 

 stincto; loculi giobulosi dense constipati (200-250 ¡x), 

 immersi non prorainuli ; asci c^'lindracei v. cylindraceo- 

 fusoidei, ápice truncati, postice attenuato-pedicellati 

 (80-100 X 8-9 [j.), octospori, paraphysibus filiformibus 

 paucis obvallati ; sporidia oblique mouo-Y. di-sticha 

 subcylindracea, atrinque obtusiuscule rotundata ( 15- 

 25 X 4-5 ¡j.) leniter inaequilateralia v. subcurvula, tri- 

 septata, ad septa non constricta, hyalina. 



Hab. Ad ramos dejectos emortuos Chiliotrichi amelloi- 

 clis prope Port Cook in Síaíen island, Mart. 1882. 



MIGROTHYRTAGEAE Sacc. 



280. MlCROTHYRlUM ANTARCTICUM Speg. (u. Sp.) 



Diag. Perithecia atra, hypopliylla sparsa superficialia, 

 orbiculari-scutata (100-110 ¡i), membranácea subcoria- 

 cella, coutextu dense prosenchymatico-radiante, circa 

 ostiolum(15 ¡j. diam.) subcarbouacea, margine fimbria- 

 tula; asci cylindracei v. cylindraceo-obclavati, antice 

 obtusi rotundati crassiuscule tunicati minute 1-foveo- 

 lati, postice rotundato-cuneati in pedicello brevissimo 

 ac minuto producti (22-27 X 3,5-4,5 \).), octospori, 

 aparaphysati ; sporidia recte disticha, obovato-elongata, 

 utrinque obtusiuscule rotundata (6,5-7 X 1,5-2 ¡jl), 

 recta v. yíx subinaequilateralia, 1-septata leniter con- 

 stricta, loculis minute 2-guttulatis, supero crassiore 

 brevioreque, hyalina. 



Hab. Ad folia dejecta Berberidis ilicifoUae et Callixe- 

 nis marginatae in Staten island, Mart. 1882, 



