300 A ]\/ono{/raj)h of the Mifxiyjastres. 



witli nuniermos small, discoid, coloured 2'>'>'oj<-'<'tions irregularly 

 scattered, combined to form an irregular network, intcrstiticd, 

 small, ellipticcd siocllings containing colourless gramdes of lime, 

 very rare ; spores brown witli lilac tinge, globose, coarsely tcartcd, 

 14 /u, diameter. 



Physariim cinerettm, Sacc, Myc. Ven., Exs., n. 1101. 



On living or dead leaves, twigs, &c. Britain (Epping Forest) ; 

 Italy. 



The above, if in reality a variety of Pliysarwn cinereum, 

 differs considerably in the structure of the capillitiiini and the 

 large, coarsely warted spores. Its occurrence in Britain and 

 Italy suggests it to be a constant form. 



Physarum chrysotrichum, B. and C. 



Sporangia sessile, subglobose when scattered, often irregular 

 or crowded and more or less confluent, wall rigid, usually 

 granulated with 'projecting lum'ps of lime, varying from yellow 

 through fulvous to almost clear vermilion; capillitium dense, 

 nodes mtmcrous, large, irregularly angidar, filled loith yellow or 

 taiuny lumjps of lime, connected at various jwints by long, thin, 

 cm2Jty internodes, some of the nodes are small and without lime ; 

 spores lilac, globose, mimttely warted, 7 — 8 /x diameter. 



Physarum chrysotrichum, B. and C, Grev., vol. ii., p. QQ. 

 (Type in Herb. Berk., Kew, n. 10,804.) 



Physarum inacqualis. Peck, 31st Report, p. 40. 



Badhamia decijnens, Host., Mon. App., p. 4. 



"Physarum suhglohosum, (B. and C.)." Sacc, Syll., vii., 1, 

 n. 1226. (I am not aware that there is any such species by 

 B. and C, and it is obviously a slip in Saccardo's Sylloge for 

 P. chrysotrichtiin. 



On moss, wood, &c. United States. 



The type specimen is a true Physarum, as will be seen by 

 the above description, and on the same piece of moss-covered 

 wood ranges through the colours given above. 



Physarum scrobiculatum. Mass, 



Sporangia sessile on a broad or narrowed base, seated on a 



