318 L'Abbe E. Coemans on the Cladonise 



My learned friend Dr. Ny lander regards C. crispata as a 

 probable hybrid of C.furcata and (jracilis. Is it not, rather, an 

 intermediate product of C. furcata and squamosa ? The herba- 

 rium of Florke at Rostock possesses many mixed forms between 

 these two species. 



28. Cladonia sparassa, (Ach.) Syn. p. 273 et hb. ejusd. 



This species is more generally known under the name of 

 Cladonia squamosa, Hffm. 



The Acharian herbarium contains only the most common 

 forms of this species, which probably explains why Acharius, 

 who was fond of multiplying forms, is here so sparing of his 

 varieties. 



Amongst his specimens are two beautiful specimens of C. de- 

 corticata, Fr. 



29. Cladonia cariosa, (Ach.) Syn. p. 273 et hb. ejusd. 



This species is represented in the Acharian herbarium by a 

 dozen specimens, from different localities, and all perfectly 

 typical. 



There is a young and undeveloped form of C. cariosa, which 

 is ordinarily given in Exsiccata under the name of C. cariosa, 

 var. symphycarpa (Ach.). This is not found in this place in the 

 Acharian collection, because he regarded it as belonging to the 

 following species. 



Some authors still unite C. cariosa with C. pyxidata. I am, 

 however, fully convinced that it forms a good and excellent 

 species. 



30. Cladonia symphycarpa, (Ach.) Syn. p. 274 et hb. ejusd. 

 Under this name I found in the Acharian herbarium — 



(1) Some young examples of C. cariosa from Sweden. This 

 is the form which Schserer, Desmazieres, Rabenhorst, Hepp, and 

 Massalongo have published under the name of C. cariosa, var. 

 symphycarpa (Ach.). It does not differ sufficiently from the 

 type to constitute a variety. 



(2) A fructiferous specimen, with small imbricated leaflets, of 

 C alcico7-nis, var.frma, Nyl., from Switzerland. 



(3) A small specimen of the same plant, gathered in ancient 

 Lusatia (environs of Gorlitz), and altogether similar to No. 13 

 of my ' Cladoniae Belgicse.^ 



(4) Some fragments of a short condensate form of C.macilenta 

 from North America. 



(5) Lastly, a specimen of C. turgida, reduced to a dense and 

 microphylline thallus, as in my * Ciadonise Belgicse,' No. 19. 



Amidst this diversity, it is naturally very difficult to say what 



