222 A MonoyrapJi of the Myocogastres. 



Didymium physarioides, Klotzsch. 



Strongylium minor, Fr., Gast., p. 9 (1817). 



Physarum melanopus, Fr., Gast., p. 23 (1817). 



Conium lobahtm, Spr., Syst., iv., 529 (1827). 



Didymmm marginatum, Fr., S. M., iii., 116 (1829). 



Didymium mdanopus, Fr., S. M., iii., 114 (1829); Berk., Ann. 



N. H., No. 882; Cooke, Hdbk., No. 1118. 

 Didymium licmisphcricum, Fr., S. M., iii,, 115 (1829). 

 Physarum nigrum, Fr., S. M., iii., 146 (1829); B. and Br., 



N. H., No. 1598; Grevillea, v., p. 12. 

 Cionium farinaceum. Link, Hdbk., iii., 416 (1833). 

 Didymium filamentosum, Wallr., 2187 (1833). 



Didymium affine, Raunk. 



Sporangia spherical-hemispherical, stipitate. Stetn thin, of 

 equal length or longer than the sporangium, expanded into a 

 circular hypothallus at the base, bright brown. Wall grey, 

 withrmt lime, under the microscope colourless. Columella glo- 

 bose-semiglobose, with the colour of the stem or brighter. 

 Threads of the capillitium nearly hyaline, expanded into numer- 

 ous shortly fusiform, Iro'ivnish-violet sioellings. Spores smooth 

 or delicately warted, 8 — 9 /x diameter. 



Didymium affine, Raunk., Myx. Dan., p. 109 (in English), 

 Tab. 5, figs. 8, 4. 



On germinating seeds in laboratory. 



Copenhagen. 



An unusual Didymium certainly in the wall being without 

 lime. Possibly abnormal. 



Didymium Fuckelianum. Rost. 



Sporangia hemispherical, umbilicate below, stipitate, stem 

 whitish with gilvous or brownish shades, strongly plicate longi- 

 tudinally, lime on the wall in the form of stellate crystals, after 

 removal of the lime the wall is covered with unsymnietrical Irown 

 or violet s]-)ots separated ly colourless veins; stem entering the 

 sporangium as a distinct clavate or ap)planatc hroivnish columella. 



