Sphseriaceae, Hyalodidymse, Melanopsamma. 579 



Hab. in ciilrao piitrescente Bambusaceas speciei cujusdam 

 ad ripas del Rio de la Plata prope Palermo, Amer. merid. 



15. Melanopsamma improvisa (Karst.) Sacc. Sph. improvim Karst. '^'^^^ 

 Mycol. Fenn. II, 93. Melanomma iinprovisum Karst. Symb. Myc. 

 Fenn. Zignoella improvisa Sacc. Mich. II, 346. — Peritheciis gre- 

 gariis vel sparsis, adnato-superflcialibus, sphseroideis, vertice co- 

 noideo-attenuatis, papillatis, laevissimis, nitidulis, glabris, nigris, 

 latit. 0,2-0,3 mill. ; ascis cylindraceis, 80-90 s 7 octosporis ; spori- 

 diis monostichis, oblongatis vel subellipsoideis, utrinque attenuatis, 

 rectis vel inajquilateralibus 1-3-guttulatis vel spurie tenuiter uni- 

 septatis, chlorino-hyalinis, 12-18^5-7, paraphysibus filiformibus, 

 coalescentibus. 



Hab. ad lignum mucidum Alni prope Wasa Fennise. — Fru- 

 ctificatione Melanopsammce pomiformi maxime affinis , habitu 

 vero diversissima. 



16. Melanopsamma hydrotheca Speg. Fung. Arg. Pug. III, n. 57. ~ 2263 

 Peritheciis primo sublenticularibus, tectis, dein erumpenti-super- 

 ficialibus, globoso-hemisphaericis, densiuscule sparsis v. 3-5-aggre- 

 gatis, atro-olivaceis, initio adpresse laxeque tomentoso-pruinulo- 



sis, serius glabris, basi tantum hyphis vestitis, Ys^-V^ oaill. diam., 

 ostiolo impresso pertusis ; ascis late clavatis, sursum rotundatis, 

 deorsum longiuscule attenuato-pedicellatis 100-110^:20-25, cito 

 diffluentibus ac aegre visibilibus, aparaphysatis? sporidiis di-tristi- 

 chis, ellipticis, utrinque obtusiuscule rotundatis, medio constricto- 

 septatis 18-22^:10-12, granuloso-farctis, hyalinis. 



Hab, ad ramulos emortuos dejectos Erythrinae Crist se-g a I- 

 li in nemorosis humidis prope la Recoleta, Argent. Amer. merid. 



17. Melanopsamma anaxaea (Speg.) Sacc. Amphisphcey^ia anaxcea 2254 

 Speg. Nov. Add. n. 71. Mich. II, p. 249. — Peritheciis tenui-mem- 

 branaceo-carbonaceis, lenticularibus, ostiolo pertuso, latiusculo do- 

 natis 200-250 a. diam., in ligno decorticato, ssepe dealbato insi- 

 dentibus; ascis cylindraceis, antice rotundatis postice breviter ac 

 nodulose pedicellatis, paraphysibus longioribus obvallatis, 80-90 ^r^ 

 8-9, octosporis rarius tetrasporis; sporidiis ellipticis, medio uni- 

 septatis non vel vix constrictis, utrinque rotundatis, non vel 1-2- 

 guttulatis, crasse tunicatis, hyaliuis, 12-15^:6-7. 



Hab. in radicibus Dryadis octopetalai in aiveo Plavis, Bel- 

 luno, in Italia boreali, 



18. Melanopsamma recessa (C. et P.) Sacc. Sphceria (denudata) re- 2265 

 cessa C. et Peck. 29 Rep. oi\ the St. Mus. New York. — Peri- 



