10 MYXOMYCETES. 



MYXOMYCETES OF GREAT BRITAIN. 



MYCETOZOA. De Bary, $ Rostafinski. 



DIVISION I. EXOSPOREJE. 



Spores externally developed. 



The genus Ccratium is referred to this Division by Rostafmski in 

 his inaugural dissertation, but only a slight notice is taken of it in 

 his more recent Monograph, and the genera and species are not 

 characterised. Hence it may be presumed that he holds the Division 

 in small esteem. 



DIVISION ii. ENDOSPORE^B. 



Spores developed within certain privileged sporocarps. 



SuB-DivisiON I. AMAUROSFOREJE. 



Spores violet or brownish-violet. 



Section A. AT RICHIE. 



Sporangia without a capillitium. 



ORDER I. PROTODERME^E. 



Sporangia simple, of regular shape, not possessed of a capilli 

 tiurn, with violet spores.- Rtjld. J\lon. } p. 90. 



Family 1. PROTODERMACE.E. 

 Characters the same as those of the Order. 



Genus 1. FStQTOBEHBIA. R. 



Yfall of sporangium single. 

 [The single species not yet recorded in Britain.] 



Section B. TRICHOPHOR^. 

 Sporangia constantly possessed of a capillitium. 



ORDER II. CALCARE^E. 



On or within the wall of the sporangia, and often in the 

 capillitium deposits of lime, under the form of granules or crystals 

 of carbonate of lime ; spores violet, or violet-brown ; sporangia 

 often provided with a columella ; sporangia simple or compound 

 . Rtjki. Mon., 91. 



Family 2. CIENKOWSKIACEJS. 



Containing lime only in granules ; capillitium of threads com- 

 bined into a net, some of the arms free, others attached to the 

 wall of the sporangium, with large flat granules of lime, often 

 branched ; columella absent. Rtfki. 31on. 3 91. 



