Parmelia. Lecanaria. 



155 



Habitat in cortice rimosa Quercus Sc ad pa~ 

 rietes ligneos vetustos. 



Qbs. Margo Scutellarurn albus fuscum induit co- 

 lorerri quando discus elevatur 8C convexus fic. In 

 vetustis crusta vel desideratur vel nigra evadit mar- 

 gine scutellarum fere evanescente. Differt a Par- 

 melia pericka crustae colore 8c apotheciis minutis 

 nec umquam henjisphseiicis , magisque confertis. 



/3. P. pinicola : crusta tenTii pulveraceo-gra- 

 nulosa cinerascente; scuteiiis minutissimis 

 confertis pianis atris, margine concolori al- 

 boque. 



Lichen pinicola. Lich. Pr. p. 66. ? Verruca- 



caria puncliformis HOFFM. Fi. Germ. p. 193. 

 Habitat in cortice Pini sylvestris & Alni. 



Qbs. In eadern crusta apothecia albo - rnarginata 8c 

 xnargine proprio atro instru&a frequenter ooserva- 

 re licuit. An duae 8c diversas Species simul coha- 

 bitantes? In hoc casu varietas pinicola, utpote 

 margine proprio corrcolori non numquam prasuita, 

 etiam ad hecideam parastmam referri. posset. 



Parmelia sophodes: crusta suborbiculari gra- 

 nuiata obscure cincreo- virente ; scutellis pla- 

 nis confertis dcmum convexiusculis nigris, 

 margine tumidulo integerrimo crustae concoiori. 

 Lichen sophodes Lich. Sv.Prodr.p. 67. ScHRAD. 



Journ. d. Bot. j8qi. St. 1. p. 71. 

 Habitat in coitice tenera truncorum Tilise. 



Ob$. Media inter Farmeliam atram 8C exiguam. 

 DiiFert ab 1 traqoe colore crustae 8C margine apo- 

 theciorum integro. Scutella? multo minores quam 

 in illa, majores vero Sc inagis diiatatas quam in hac. 

 . — Crusta rnacnlaris ex granulis vel verrucis ad am- 

 bitum sensirn minoribns comppsita, fusco sublirni- 

 tata diarnetro vix sernipollicai i. In singula verru- 

 ca scutella pro^eVmiqat. Scutellae versus centrum 

 confertiores ibidernque majores, margine supra di- 

 O 2 scum 



