The Myxomvcetes of Eastern Iowa. i6i 



such a case the cortex and hypothallus are generally well 

 developed; the yellow or yellowish-green varieties are more 

 commonl}- if not always found fruiting where they grow. In 

 size the tethalia seem limited only by the condition of adequate 

 food-supply. Specimens one foot in diameter have been 

 reported. Our largest plasmodia spread over perhaps a foot 

 square; our largest fruiting mass is four inches by two and 

 one-half. 



This completes our present list for this locality. Doubtless 

 its length may soon be greatly increased, perhaps be even 

 doubled. Much material unclassified and unarranged must 

 wait a wider leisure. Meantime the author will hope the 

 assistance of his fellow botanists, at least in Iowa, that this 

 long-neglected field may become, with passing seasons, better 

 and better known, alike to the increasing delight of those who 

 find pleasure in the beauty of natural objects, and to the fur- 

 therance of biologic science in this State. 



The following list includes the principal works of reference 

 to which the author has had access in the preparation of this 

 paper: 



Berkeley, M. J., Outlines British Fiuigology. 



BOTANISCHE ZeITUXG, DlE. 



Cooke, M. C, Myxomycetes of Great Britain. 



Cooke, M. C, Myxomycetes of the Ifjiited States. 



CoRDA, A. C. I., Icones Fiingorum. 



De Bary, a., The Mycetozoa, Ed. iSjj. 



Ellis, J. B., North American Fungi {Exsiccati). 



Fries, Elias, Systema Mycologicum, Vol. III. 



GcEBEL, Dr. K., Outlines of Classification. 



Harkness, R. W., Catalogue of the Fungi of the Pacific Coast. 



Journal of Mycology, Published by Dept. of Agric., Washington, D. C. 



Kent, W. Saville, Manual of the hifusoria. 



Massee, George, Rivision of Trichiacece, four. Royal Microscopical 



Massee, George, British Fungi. [Society, i88g. 



Peck, Chas. H., Reports of the Xevj Tork Cabinet of Natural History. 



Pfeffer, Dr. William, Pflanzenphysiologie. 



