of the Herbarium of Acharius. 315 



2. A robust specimen of C. furcata (from Switzerland) and 

 another of C. amaurocrcea appear amongst the C ecmocyna 7. 

 macroceras e. exoncera. 



3. A C. crispata (from Sweden) and a fragment of C, amauro- 

 craa (from France) are labelled as C. ecmocyna S. corymbosa. 



4. Amongst the C. ecmocyna e. aspera we meet with a C.fur^ 

 cata (fertile), which Acharius has marked subsequently Cen. 

 alcicornis ? 



16. Cladonia owyceras, (Ach.) Syn. p. 262 et hb. ejusd. 



Acharius has confounded here, in his Synopsis, two species, 

 or at least two very distinct forms, C. uncialis (L.) and C. amau- 

 rocrcea. At a later period he recognized this error, and in the 

 herbarium has consequently indicated in pencil all the speci- 

 mens referable to C. uncialis. Bearing in mind these correc- 

 tions, the C. oxyceras of the Acharian herbarium may be re- 

 garded as synonymous with C. amaurocrcea of Florke. 



To regulate the synonymy, the specimens of the different 

 varieties of the Synopsis are here referred to their proper spe- 

 cies, viz. : — 



Var. cladonioides (Syn. p. 264) is referable to typical C. amau- 

 rocrcea in a sterile state. 



Var. cetraroides (Syn. p. 264) is the same species in fructifi- 

 cation. 



Var. dicrcea (Syn. p. 265) is synonymous with typical C. un- 

 cialis (L.). 



Var. ohtusata (Syn. p. 205) is a very robust form of C. un- 

 cialis (L.) with swollen extremities. 



Var. medusina (Syn. p. 265) constitutes a proper species — 

 Cladonia medusina (Bory). The small specimen of the Acharian 

 herbarium has been removed. 



Var. spiculata (Syn. p. 265). The specimen of this in the 

 Acharian collection has also been abstracted; it is therefore 

 impossible, in the absence of other information, to indicate the 

 species to which this variety may belong. 



Besides these specimens, I have moreover found in the collec- 

 tion at Helsingfors a remarkable specimen of C. amaurocrcea, 

 sent fron) the Grimsel by the late M. Schserer, having nearly the 

 appearance of Cladonia portentosa (Duf.), and named by Acha- 

 rius Cen. oxyceras crassipedia, and another of the same species, 

 with short stems swollen at the summits, called turgescens by 

 the Swedish lichenographer. 



17. Cladonia sulphurina, (Ach.) Syn. p. 265. 



I have not found this species either in the Acharian herba- 

 rium or in that of Florke; but "I refer it to C. deformis, Hffm., 



22* 



