378 Sphgerkoeae imperfeete cognitae. 



grescit; lignum quasi colliculosum reddit. sed non nigrescit inter 

 plagas. 



Hab. seriatim pervenit in ligno denudato Bethiehem Am. bor. 



44. Sphseria elevans Schw. Syn. Am. bor. n. 1303. — Tecta, sed 4i<>9 

 non eortiee, sed fibris ipsis ligni, quibuscum longe lateque assur- 

 git, superficiem nigro-tingens, et inaequalem reddens; peritheciis 

 stromate fuiigineo-puiverulento tectis, majusculis, globoso-depres- 



sis. circum ostioia majuscula quasi radiatim subcircinantibus ; su- 

 periicie tactu exasperata ostiolis prominontibus. 



Hab. in truncis denudatis R. hois glabri Bethlehem, Ame- 

 rica boreaii. 



45. Spft&ria denigrata Schw. Syn. Am. bor. n. 1307. — Late effu- 4170 

 sa, crustacea, crusta teaui nigra denigrans lignum; in hac obser- 

 vantur verrueae longitudinaliter elongatoe ac parallele subconfluen- 



tes ex congerie peritheciorum orta% quae his immersae, et serie 

 erumpunt per ostiola minuta difformia parura elevata; peritheciis 

 ipsis albo-iarctis, depresso-globosis, sparsis in massa crustse ira- 

 raersis. 



Hab. in denudato ligno Rhododendri niaximi, Bethlehem, 

 Amer bor. 



46. Sphaeria confusa Schw. Syn. Am. bor. n. J30G. — La(? effusa, 4m 

 non ime immersa, concrescens, subefiigurata, atra; peritheciis po- 

 lystichis, superimpositis stromate fuligineo-pulveraceo, obovatis, 

 abeuntibus in ostiola rugosa subpyramidata angulato-aspera, de« 

 mum pertusa. 



Hab. in cortice et ligno Bethlehera, Amer, bor. 



47. Spbaeria concrescens Schw. Syn. Am. bor. n. 3 301. — Crusta 4172 

 quadam ex massa corticis orta nigro-fusca tecia; transvemm 

 ciumpenc forma orbiculata aut utrinque angustata per epidern"- 

 dem, disco quasi excavato, substellat.im epidermide cincta et mar- 

 ginibus subelevatis prsedito bi-vel tri-lineari; in hac crusta, con- 

 crescunt perithecia numerosa, basi immersa, gioboso-depressa, rai- 

 nuta, superne attenuata in ostiola cylindrica, crassiuscula, promi- 

 nula; peritheciis intus albo-farctis, demum formam mutantibus et 

 quasi conico-cylindricis. 



Hab. in eraortuis raraulis Ribis aurei Hortorum Bethlehem, 

 Amer. bor. — Affinis Sph. recondifos, at habitu excavato disci 

 bene distincta. 



