288 



Verrucaria Lithoicea. 



ea marginantibus , difpofita , fed papillula prominentia. Ob minutiem internam 

 eorum flrucluram accuratius luflrare haud fucceflif. 

 Cruflae fingulari conformatione ab affinibus diflindiflima eft. 



33. VERRUCARIA polythecia. 



V. crufla tartarea inaequabili granulata cinerea ; apotheciis globofis minutis confer- 



tis femiimmerfis, ofliolo fubmarginato pertufis, nucleo fordide albo. 

 Habitat ad terram Helvetiae. Schleicher. 



Crufla fere contigua folidiufcula terrae inflrata granulata vel papiliulis hemifphaeri- 

 cis pallim obtecta. Apotliecia minuta conferta inferiori fua paite cruflae im- 

 merfa, ofliolo pro magnitudine apotheciorum magno imprelfo notata, unde 

 quafi margine proprio cincta apparent; quare etiam pro Lecideae fpecie ha- 

 beri poifet nifi peiithecium obflaret nucleum fordide album in flatu hume&ato 

 hyalinum includens. 



34. VERRUCARIA aainoftoma. 



V. crufla tartarea rimofa rugofo-areolafa alba; apotheciis globofis immerfis umbi- 



licatis marginatis, papillula pulvere albo radiata, intus albis. 

 Urceolaria adinofloma. Perfoon. in Litt. fecundum fpecimen mijfum. 

 Habitat in faxo filaceo Galiiae. Perfoon. 



Singularis fpeeies haec efl. Crufla craffiufcula fordide alba rimofa, areolis con- 

 vexiufculis irregularibus , unde quafi plicato - rugofa. Apothecia in fingula 

 areola iinum vel plura minuta atra fubglobofa , tota immerfa, umbilicata, papil- 

 lula centrali parum elevata, e qua uti e centro communi, in flatu perfe&o, flriae 

 radiantes albae pulveraceae ad marginem a perithecio fupra formatum, a crufla 

 vix elevatum, duclae obiervantur. Nucleus globofus humeclatus hyalinus. 



3f. VERRUCARIA muralis. <x. 



V. crufla tartarea rimofa alba; apotheciis fubgiobofis immerfis papillatis, ofliol» 



demum dilatato alfao pruinofo marginato, intus nigricantibus. 

 Verrucaria muralis. Achar. Meth. Lich. p.uj. 



Lichen calcarius. Achar. Lichenogr. Svec. Prodr. p.tio. (exchijis fynonymis). 

 Habitat ad muros antiquos calcefillitos Sveciae. 



An crufla hujus geuuina fit vel tantum e calce illita conflet vix dici potefl. Super- 

 ficie ejus laevigata paflim derafa fubtus pulveracea obfervatur et in vetuflis fpe- 

 ciminibus magis fordida et cinerafcens. Apothecia vix perfecle globofa fed ali- 

 quantum comprefla magnopere variantia, nam et papillata atque fupra cruflam 

 parum prominentia, et planiora convexiufcula non papillata, et in medio quafi 



imprelfa 



