206 A Monograph of the Myxogastres. 



Didemna physarioides, Schum., Herb. 

 Didemia depressum, Fr., S. M., iii., 108 (1829). 

 Diderma lenticulare, Wallr., Herb. 

 Didymium Michelii, Lib., Exs. ii., 180 (1832). 

 Didymium hemisphericum, Berk., Engl. Fl., v., p. 312 (1836) ; 

 Cke., Hdbk., No. 1119. 



Chondrioderma globosum, Rost. k 



Sporangia globose, seated on a broad or narrow base, Tiypoihallus 

 strongly developed, chalk-iohite, containing much lime, outer wall 

 thick, white, at length irregularly ruptured ; inner wall cine- 

 reous, often iridescent ; columella white, small, globose or 

 ellipsoid ; threads of capillitium bright violet, sometimes almost 

 colourless, forming a dense net; spores lilac with tinge of 

 brown, minutely warted, 8 10 /* diameter. 



Chondrioderma globosum, Rost., Mon., p. 180, fig. 138; Cooke, 

 Myx. Brit., p. 39, 40, fig. 138; Schroeter, p. 370; Sacc., Syll., 

 n. 1278. 



On leaves, twigs, &c. Britain (Norths) ; France ; Germany ; 

 Belgium ; Italy ; U. States. 



Sporangia often subangular from mutual pressure, f 1 mm. 

 diameter. Columella pure white. 



(Rostafinski's Synonyms.) 



Mucilago, 7, Mich., t. 96, f. 6 (1729). 



Lycogala, Hall., n. 2143 (1763). 



Reticularia sphaeroidalis, Bull., 446, f. 2 (1791). 



Didavna gldbomm, Pers. Disp., t. 1, f. 4, 5 (1797) ; Eng. Fl., 



v., p. 312; Cke., Hdbk., 1114. 



Didymium candidum, Schrad., Nov. Gen., 25 (1797). 

 Didymium glolosum, Chev., Fl. Par., t. 9, f. 28 (1827). 

 Physarum sphaeroidcs, Chev., Fl. Par., 339 (1827). 

 Cionium globosum, Spr., iv., 529 (1827). 



Chondrioderma niveum, Rost. (figs. 89 91). tiv<v 

 Sporangia sessile, hemispherical, elliptical or irregular from 



