316 A Moiiogmph of the MyxogaMres. 



or black ; stem slender, equal, or slightly tapering upward, 

 vermilion ; spores globose, brown, -00033 in. in diameter ( = 

 about 9 /m). 



Phi/sarum j^u^chco-ripcs, Peck, 26th Report, New York State 

 Mus., p. 75 ; Sacc, Syll., vii., 1, n. 1207 (as P. 2ndchripes). 



Rotten Vv'ood. Richmondville and Worcester. 



The bright colour of the stem is quite conspicuous, notwith- . 

 standing the small size of the plant. 



Physarum polyaedron, Sz. 



Gregarious or slightly scattered ; sporangia rather large, 

 smoky -black, dull, subhemispherical, exactly pentagonal, sides 

 plane, rugulose, dehiscing in an irregularly stellate manner, 

 lower portion persistent; spores smoky-black, mixed with 

 threads of a similar colour. 



Physarum polyaedron, Schweinitz, N. Amer. Fung., n. 2300, 

 p. 257 ; Sacc, Syll., vii., 1, 1224. 



On very old walnut trunk. Bethlehem ; United States. 



Schweinitz says the present species resembles some minute 

 sea-anemone, 



Badhamia, Berk, (emended). 



Sporangia stipitate or sessile, wall single, dehiscing by the 

 irregular rupture of the upper portion ; threads of the capillitium 

 springing from all parts of the sporangial wall, combined to 

 form an irregular network, usually thick, and containing granules 

 of lime throughout their length ; columella absent ; spores 

 originating in clusters or free from the first, globose or elliptical.. 



Badhamia, Berk., Linn. Trans., xxi., p. 153; Berk., Outl, 

 p. 303; Cooke, Hdbk., p. 391 ; Cooke, Myx. Brit., p. 25; Rost., 

 Mom, p. 139; Sacc, Syll, vii., p. 329; Zopf, p. 147. 



The genus, as founded by Berkeley, was characterized by the 

 clustered spores, a feature now well known to be far from 

 constant, even in the same species ; Berkeley further considered 

 that the clusters of spores originated in hyaline cysts or mother- 

 cells ; this has not been corroborated. The genera included in 



