56 THE NORTH AMERICAN' SLIME-MOULDS 



yellow, continuous, covered over with large reddish or orange- 

 colored scales ; the stipe when present very short dark brown 

 or black ; hypothallus none ; capillitium an open network of 

 delicate colorless threads, uniting large angulate orange-colored 

 nodules ; columella none ; spore-mass dark brown ; spores by 

 transmitted light, violet brown, minutely warted or almost 

 smooth, globose, 10-11 //,. 



We have here referred certain forms from Washington col- 

 lected by Mr. Savage near Seattle, as well as forms collected 

 by the author on Mount Shasta. These, perhaps, represent the 

 same species as that collected by Mr. Harkness, sent to Mr. 

 Phillips of England, and by him named Badhamia inaurata. 

 Lister quotes the spores of the latter as 8-10 ^ in diameter. 

 In the Washington specimens some of the spores are no larger 

 than 8, but most are nearer 1 1 p. The American specimens 

 seem more decidedly squamulose than those from Europe, with 

 which we have compared them. 



Rare. Probably widely distributed on the Pacific Coast ; Ohio. 



38. PHYSARUM CITRINUM Schumacher, 



1803. Physarum citrimim Schumacher, Enum, PI. Saell., II., p. 201. 



Sporangia gregarious scattered, globose, somewhat flattened 

 below, pale yellow, citrine stipitate ; the peridium thin, covered 

 almost completely with small calcareous scales ; stipe stout, 

 erect, fragile, tapering upwards, furrowed, opaque, arising from 

 a small hypothallus, which is anon continuous from one sporan- 

 gium to the next ; columella small, conical, yellow ; capillitium 

 a rather dense, delicate network, the calcareous nodules yellow, 

 numerous, roundish, and generally small ; spore-mass black ; 

 spores under the lens violaceous, almost smooth, about 8 p. 



This species seems to be rare in the United States. It resem- 

 bles somewhat P. mcllcnm, from which it is distinguished by its 

 yellow stipe. P. galbcum is a smaller form, and lacks the 

 columella. Rostafinski strangely confused the synonymy here, 

 including even P. rnfipcs A. and S. 



New England, Ohio. 



