Sphaeriacese, Phseodidymse, Valsaria. 745 



— Anthostomatis gasirini formse liberatag similis, sed sporidiis 

 bilocularibus statim dignoscitur. A Valsaria Niesslii Winter (sec. 

 specim. orig.) stromate oblongo ligno decorticato semiimmerso prse- 

 cipue difFert. 



12. Valsaria quadrata (Schw.) Sacc. Myrmceoium quadratum (Schw.) 2818 

 Rehm Asc. n. 325. Diatrype quadrata Schw. Diatrype obesa B. 



et C. Diatrype exasperans Gerard. in Hedw. 1874, p. 174. — Pe- 

 ritheciis subglobosis, stromate olivaceo-virente exceptis, perider- 

 miura pustulatim elevantibus, perforantibus, acervulosque elonga- 

 tos efficientibus ; ascis cylindricis 105^8; sporidiis late ovoideis, 

 obtusis, uniseptatis, medio constrictis, 14-15^:7,5-8, obscure fuli- 

 gineis; paraphysibus filiformibus, guttulatis. 



Hab. in ramis corticatis B^agi ferrugineae, Quercus, UI- 

 rai, Liquidarabaris, Aceris, Pruni, Rhois, in Carolina, 

 Pensylvania etc. Amer. bor. 



13. Valsaria melastroma (Fr.) Sacc. Sphceria melasiroma Fr. S. M. ^m 

 II, 399. Scl. Suec. n. 223, ex Cooke Vals. of Un. St. 122, sub Valsa 



— Pustub.ta, subverrucseformis, peritheciis aggregatis, disco erum- 

 pente angulato nigro obsolete pertuso: sporidiis ellipticis, unisep- 

 tatis, fuligineis 32sl4. 



Hab. in cortice Ulmi in Suecia et Amer. bor. — Habitus Dia- 

 trypellcB verrucceformis, sed minus prominet et conceptaculum 

 omnino corticale. Perithecia subsena, erectiuscula, conferta, pro- 

 funde immersa, verticaliter collabentia. Discus epidermide angula- 

 to-flssa erumpens, a cortice interiore formatus, sed superficies pla- 

 na, laevis, opaca, nigro-facta. Ostiola discum perforant, sed non 

 prominent. 



14. Valsaria angularis (Peck) Sacc Diatrype angularis Peck Bot. gggo 

 Gaz. 1880. — Stromate minuto, vix 2 mill. diara., erumpente ex- 

 terne nigro v. nigricante, intus rubiginoso; peritheciis majusculis, 

 paucis 1-6; ostiolis prorainentibus, angulosis, compressis v. pjra- 

 midalibus ; ascis cjliiidraceis; sporidiis monostichis, magnis oblon- 

 go-ellipsoideis, obtusis I-septatis, fuligineis, 27-54 :; 15-18. 



Hab. in cortice Tiliae americanse, Vermout Amer. bor. (C. 

 G. Pringle). — Stromata lignum non penetrant; sporidia subinde 

 raedio subconstricta. 



15. Valsarla SBthiops (C. et E.) Sacc. Diatrype cethiops C. et E. 2821 

 Greviil. VI, p. 10. — Irregularis, convexa, atra; peritheciis in 

 stroraate coriaceo congestis, ostiolis prorainulis ; ascis cylindraceis ; 

 sporidiis ellipticis, uniseptatis, brunneis, 20 :; 10. 



