— 16. — . 



2^* LiCHEN drywus cruRaceiis albicans pii!ven> 

 lentus 5 thalamis convexiafculis rugofis nigrise 

 Verrucarin ? dryina^ Svet. Eklaf. 

 Habitat in corticc Qucrcus antiqua , rimofa, 

 Obf. Hahit^s Verrucart.t ^ oh cruflam ejfitfam mi- 

 cantem , quamvts jHhpulverulenta adpareat, Rc" 

 teptacula quadam Jtihglohofa apice tmpresfaire* 

 licfua [cutelHformia ^ propinqmtatem cum Patel- 

 lariis indighant^ Crujla contrita & hume^ata 

 crocea evadit» 



26» LiCHEN (liBicus — crudaceus cinereiis te^iuisri- 

 miis inaequalis; thalamis fubglobofls nigris, 

 Veyrucaria fliBica» Svet^ Smullaf 

 Habitat in Tiiiaej Salicis & Fraxini cortice* 



27, LiCHEN eptdermldis — Gruftaceus niveus tenuisli- 

 mus laevis ; thalamis minutisfimis convexiu- 

 fculis atris. 

 Verrucaria epidermidis, Svet. Ndfverlaf, 

 Habitat in tenera epiderrnide Betulas albae. 

 Obf. Cruftd tenuisjima fere nulla , interdum fuhcf' 

 fterafcens, Thalami winutisfimi fuhrugofi 



Sg. LiCHEN atomarius — cruftaceus glaucefcens te- 

 nuisfimus nitens j thalamis convexiufculis 

 fufcoatris. 

 Verrucaria Atomaria^ Svet. Grandlaf^ 

 Habitat in cortice Fraxini. 



29, LiCHEN hyloicus — cruftaceus albus tenuisfimus^ 

 thalamis fubglobofis fufcis demum nigris» 

 Verrucaria hyloica^ Svet. Sidenlaf, 

 Habitat in arborum ligno denudato fnbputrefcente,^ 

 Obf. Crufla vix ulla. Imer fihrilUs liji^neas tenuisfi' 

 mas holofericeas albas tmergunt thalami mnH' 



tisfimi 



