cim. Parm. sulcatae Tayl. + 2 specim. Parm. saxatilis Ach, 

 (isidiosae). 



19. Lichen omphalodes (94(>) = 4 specim. Parm. saxa- 

 tilis Ach. (isidiosae) -j- 1 specim. Parm. sulcatae Tayl. -j- 

 1 specim. Parm. conspersae (Ehrh.) Ach. f. isidiatae Anzi 

 (obs. specieDi praeced.). 



21. Lichen olivaceiis = Parmelia olivacea Ach. 

 Lichen Fahlunensis = Platysma commixtum Nyi.!, laci- 



niis thalli angustis, mediiUa hydrate kalico non reagente 

 (4 specim. in 2 fol.). 



22. Lichen stygius = Parm. stygia Ach. (2 fol). 

 ^.Liche7i crisjms or cristatus D." = Collema pulpo- 



sum Ach. 



25. Lichen parietinus = Physcia parietina De N. (spe- 

 cim. numerosa) + 1 specim. Lecanorae elegantis Ach. 



Lichen physodes = Parmelia physodes Ach. (specim. nu- 

 merosa). — ,,26. Lichen physodes^^ = Parm. duplicata Ach. 

 (Wainio, Adj. I, p. 12G). 



Lichen stellaris = 7 specim. Physciae stellaris Nyi. — 

 L. stellaris D. = Physcia obscura f. cycloselis Ach. (thallo 

 sordido, soredioso). 



[Lichen p u 1 v e r u 1 e n t u s "VV e b.] (obhtus) certe 

 novus. [L. stellaris] L. aipolkis Adi. Proclr. 112. Froui 

 Dr. Bengys to Linn.''' = Physcia pulverulenta f. detersa 

 Nyi. (Wainio, Adj. I, p. 131), laciniis thalli concavis glau- 

 cisque, margine apotheciorum integro. 



^.Lichen plunibeus, var. Lightf., Dicks., affinis Dicks. 

 fasc. 4."''' = Pannaria plumbea Del., ut videtur. 



Lichen tenax Acli,. Prodr. 128 = Collema a me haud 

 exacte examinatum. 



..Lichen litridus, atroalhus, laevis Jade. Msc. D.'^ = 

 Psora. 



..Lichen chrysophthalmus (32 Koenig.)'"* 



Lichen [e r i s p u s] Burgessii = Leptogium, 



28. Lichen ciliaris =^ Physcia ciliaris D.C. 



30. Lichen islandicus = 4 specim. Cetrariae islandi- 

 cae Ach. + 1 specim. Cetrariae crispae (Ach.) Nyi. — j,30. 



