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A NEW PHYSARUM FROM COLORADO. 



By THOS. H. McBRlDE. 



Physarum newtoni Macbride, n. s. Plate XI, Figs, i, \a 

 and \h. 



Sporangia simple, gregarious, short stipitate or sessile, glo- 

 bose or flattened, when not globose depressed and deeply um- 

 bilicate above, purple, smooth, thin-walled, stipe when present 

 very short and concolorous; columella none; hypothallus 

 none; capillitium abundant, delicate, with more or less well 

 developed nodules, which are also concolorous; spores by 

 transmitted light, dark brown, thick-walled, rough, nucleated, 

 about iO/<. 



A very handsome little species collected by Prof. G. W, 

 Newton in Colorado at an altitude of several thousand feet. 

 Easily recognized by its almost sessile, rose-purple generally 

 umbilicate sporangium. 



lotva City^ lojva, Sej'tember^ '^93- 



