of the Herbarium of Acharius. 315 
2. A robust specimen of C. furcata (from Switzerland) and 
another of C. amaurocrea appear amongst the C. ecmocyna y. 
macroceras e. exoncera. 
3. A C. crispata (from Sweden) and a fragment of C. amauro- 
crea (from France) are labelled as C. ecmocyna 6. corymbosa. 
4. Amongst the C. ecmocyna ¢. aspera we meet with a C. fur- 
cata (fertile), which Acharius has marked subsequently Cen. 
alcicornis ? 
16. Cladonia oxyceras, (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- 
rocrea. Ata later period he recognized this error, and in the 
herbarium has consequently indicated in pencil all the speci- 
mens referable to C. uncialis. Bearmg in mind these correc- 
tions, the C. ovyceras of the Acharian herbarium may be re- 
garded as synonymous with C. amaurocrea 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- 
rocrea in a sterile state. 
Var. cetraroides (Syn. p. 264) is the same species in fructifi- 
cation. 
Var. dicrea (Syn. p. 265) is synonymous with typical C. un- 
cialis (L.). 
Var. obtusata (Syn. p. 265) is a very robust form of C. un- 
cialis (i.) 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 mdicate 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. amaurocrea, 
sent from the Grimsel by the late M. Scherer, 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 Flérke; but I refer it to C. deformis, Hftm., 
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