S36 IV. Lichenes, 2. discocymatn. 



Ad arborum tnmcos inios, Tilias praeprimis , Cra- 

 taegos ct Pseudo-Platanos in locis abditas, in quibns cy- 

 matia faciln pruina quadam s« gonidiis adspersis leviter 

 consporcata si\e albescunt sive virescunl {(). vulvella.p. 

 lutescens Ach. syn.). (Est Gr. variae [orraa' piatycymatia 

 cx loci latibulis mutata saepiusque gpnidiis ?iridulis pro- 

 fusia macidisque suliurcis s. ochromaticis spurca.) 



791. Gr. notha /f r ., blastemate chrysogouimico hy- 

 poplilocodc dein crustam contiguam epiphloeodem arach- 

 noidcam incusam candidam mentiente, cymatiis! nigris 

 primum punctiformihus subrotundis ovatisve marginetur- 

 gidoinflexo speiremadochium rimatum occultantibus, dein 

 plauo-convexiusculis rugulosis dilatatis marginem recli- 

 nautibus biformibus, aliis crassis exacte rotuudatis pa- 

 tellaribus majusculis, aliis ovatis hinc s. utriuqne con- 

 tractis. 0. notha «. Ach. lich. 252., syn. 76. Il r ahlcnb. 

 suec. U. 751). D(\ gall. IL 310. Flor. dan. t. 1282. 0. 

 cymbiformis p. lichcnoidcs Schacr. I. I. 0. vcrrucarioi- 

 dcs Ach. pr> pr. O. lichcnoidcs Pcrs. in Uster. Ann. J II. 

 30. t. 2. /. 4. Arthonia gibbcrulosa Ach. Uch. 



Ad truncos vetustos Populorum, Fraxinorum, Ulmo- 

 rum aliarumque arborum cum reliquis passim seorsim- 

 que occurrit, quae var. platycymatia in loco aprico ple- 

 rumque bl. caudidiore instructa, cymatiis tornatis a' Pa- 

 tcllariis melaoophaenis diguoscenda , spciremadochioque 

 nonnisi prolifero, transitum ad Gr. Umbilicarias indigitat.) 

 -j-f bl. crustacco chlorogonimico. 



792. Gr. pctraea W., blastemate crustaceo lcio- 

 placino chlorogonimico verrucoso albo, verrncis confertis 

 convexis- crustam rimoso-areolatam mentientibus nounisi 

 hypothemati insidentibns, cymatiis emersis sessilibus. ova- 

 tis oblongisque gibboso-turgidis utriuqne obtusis niten- 

 tibns speiremadochium tenuiter-rimatum suboccluden- 

 tibus. — 0. pctraca Ach. syn. 72. 



Ad saxa duriora Tharingiad rarissime. (E linginquo 

 Putellariam atro-albam ferme aemulatur, quae blastema- 

 tis crnstacei ratione a reliquis omnibus eximie diifert.) 



