191 



6. A. molybdina (Wnbg.): thallo orbicular! 1. centrifugo, crustaceo, 

 radiato-plicato, areolato-verrucoso , fusco-umbrino 1. spadiceo, subtus albo, 

 laciniis ambitu linearibus, plus minus convexis, subcontiguis; apotheciis in- 

 natis, disco urceolato, fusco-nigricante, huniido castaneo-rufescente, margine 

 tballode tumido. 



Syn. Parmelia molybdina Fr. L. E. p. 126. Lecanora Schaer. 

 Kmim. p. 62. Acarospora (TrockiaJ Mass. Enum. p. 21. 

 Exs. Th. Fr. n. 32. 



a. vulgaris Schaer. : crusta crassa, margine thallode disci marginem 

 obtegente. 



Syn. Parmelia molybdina Wnbg. in Ach. Meth. Suppl. p. 42. 



Lecanora molybdina a, Ach. Univ. p. 430, Syn. p. 185. Lichen 

 Wnbg. Lapp. p. 418 et tab. XXIX f. 1 a c. 



/3. ereutica (Wnbg.): thallo tenuiore, apotheciis concaviusculis, mar- 

 gine thallode a proprio discrete. 



Syn. Parmelia ereutica Wnbg. in Ach. Meth. Suppl. p. 43. Lecanora 

 Ach. Univ. p. 430 (), Syn. p. 185. 



Lichen molybdinus /?. Wnbg. Lapp. 1. c. et f. 1 d e. 



f. microcyclos (Wnbg): thallo tenui, laciniis planiusculis, apotheciis 

 impressis. 



Syn. Lecanora ereutica j9. microcyclos Ach. Univ. p. 431. 



Lichen molybdinus y. microcyclos Wnbg. Lapp. p. 418 et tab. cit. f. 

 1 f h. Lecanora Ach. Syn. p. 186. 



. hysgina (Wnbg.): thallo minuto, substellato, squamuloso, disco 

 immerso immarginato. 



Syn. Parmelia? hysgina Wnbg. in Ach. Meth. Suppl. p. 48. Li- 

 chen Wnbg. Lapp. p. 419 et tab. XXVII f. 1. Lecanora Ach. Syn. 

 p. 186. 



Lecanora molybdina /?. hysgina Ach. Univ. p. 430. 



e. virescens Fr. : thallo vix effigurato, soluto, obscure viridi. 



Eximium Florae arctoae decus, secus litora marina Nordlandiae, 

 Finmarkiae utriusque, insul. Spitsbergensium et Groenlandiae baud infrequens, 

 meridiem versus rarescens; a. in saxis graniticis durioribusque , /?. in argil- 

 laceis, 7. et in schisto argillaceo, & in saxis siccis graniticis rarius (ex. gr. 



