Sphaeriaceae, Phaeosporae, Hypoxylon. 391 



sum et omnino proprium, pulveraceum, primo olivaceum, dein fii- 

 liginosum, cortice tectum peritheciophoro. Perithecia cortici stro- 

 matis adnata, psene superficialia, stipata, at non confluentia, mi- 

 nuta, subglobosa, Itevia, atra, raro papillata, saepius pertusa. 



169. Hypoylon afflatum Schwein. Syn. Carol. n. 68. {Sph. afflata) 1502 

 Effusum, tenuissimum, effiguratum, nigerrimum, peritheciis confer- 

 tissimis, minimis prominulis dense punctatum. 



Hab. in lignis siccis Carolinse Amer. bor. — Omnium hujus 

 seriei specierum tenuissima, maculas atramentosas opacas varise fi- 

 gurae et saepius lobatas exhibens, ligno quasi afflata (nuUo raodo 

 immersa), uti mappa geographica effigurata; perithecia minima su- 

 perflcialia, stipatissima, plane concreta stroma sistunt. 



170. Hypoxylon atramentosum B>. S. M. II. 344. {Sph. atra^nentosa) 1503 

 Sph. insidens Schwein. in litt. — Atrum, peritheciis confertis hemi- 

 sphsericis Isevibus subastromis, e stromate crustaceo tenui insequa- 



bili nigro prominulis. 



Hab. in asseribus et ligno decorticato Mali in Suecia et Ame- 

 rica bor. — Crescendi modus maculaeformis omniao H. rubigino- 

 si, sed miiuis et perithecia prominent oranino ut in ejus Eetate ve- 

 tusta, in ambitu sterile; perithecia perexigua. 



171. Hypoxylon incrustans (Pers.) Mont. Ann. Sc. nat. 1855, 111. 119. 1504 

 Sph. inc^-^ustans Pers. Syn. p. 62 et Fr. S. M. II. 343. — Crusta 

 effusa nigra ; peritheciis subrotundis rugosis, subconfluentibus, atris, 

 ostiolis crassiusculis conicis obtusis. 



Hab. ad truncos populinos, acerinos in Gallia et Germania. 

 — Crusta late effusa, contigua, indeterminata, glabra, tenuis, aterri- 

 ma, etiam supra cortices superflcialis ; perithecia ampla, super- 

 ficialia, rugosa, nunc solitaria, nunc omnino connata, extus intus- 

 que atra; pro more bicorticata, exteriori in crustam extenso; ostio- 

 la perforata, demum decidua. 



172. Hypoxylon transversum (Schw.) Sacc. Sph. (Hypoxyl.) iransver- i505 

 sa Schw. Syn. Am. bor. n. 1180. — Magnura, subpulvinatum, cor- 

 tice subimmersum et pulvinatum prorumpens, difformiter aut tur- 

 binatim angulatum, superficie irregulariter rugosum aut aequabile, 

 nigrum; peritheciis ovatis, periphaericis, intus splendenti-nigris; 

 stromate nigro-fusco pulverulento ; ostiolis raanifestis prominenti- 

 bus plano-conicis. 



Hab. in trunco BetuljB carpinifoliae rarius, Mauch, Chunk, 

 Araerica borealis. — Stromata transverse erumpentia unciara lon- 

 ga, Y4 unc. crassa. 



