Craterium. 271 



brown ; capillitiura dense, white, threads aggregated in the centre 

 to form a hroumish columella; spores violet with usually a 

 brown tinge, globose, covered with irregular simple or hranclicd 

 ridges, ivhich here and there combine to form an imx)erfect network, 

 10 — 14 i*. diameter, 



Badhamia dictyos2wra, Rost., Mon. App., p. 4; Cke., Myx. 

 Brit., p. 82. 



On wood, moss, &c, Britain (Carlisle) ; United States. 



Gregarious, 2 — 3 mm. high ; indistinguishable from C. ru- 

 higinosuiii, except by the nature of the markings on the epispore. 

 May possibly prove to be a form of the last-named species. 



(Rostafinski's Synonyms.) 



Physarum canum, Klotzsch., Hb. Houk. 

 Physaritm rubiginosum, Berk., Eng. FL, v., p. 31; 



Craterium lilacinum, Mass. (figs. 307, 808). 



Sessile, aggregated, globose, smooth, reddish-lilac, capillitium 

 threads variable in diameter, clustered together in the centre and 

 forming an irregular columella ; spores purple, sometimes tinged 

 with brown, globose, epispore furnished with short, irregular 

 ridges, which sometimes combine to form an irregular network, 

 12 — 16 ju diameter. 



Badhamia lilacina, Rost, Mon., p. 145, figs. 108, 109; Cke., 

 Myx. Brit., p. 27, figs. 108, 109 ; Sacc, Syll., vii., n. 1156. 



Exsicc. — Syd., Myc. March., 1297 (as Leocarims irrnicostis). 



On rotten wood, bark, twigs, &c. Britain (Carlisle); Ger- 

 many ; United States. 



Usually crowded, sporangia seated on a broad base, wall 

 generally smooth, but sometimes rather rough. The present 

 species may eventually prove to be a sessile form of C. dietyo- 

 spcrmum. 



(Rostafinski's Synonym.) 

 Physarum lilacinum, Fr., I.e., iii., p. 141 (1829). 



