130 



Mycologia 



Substrata : On bread, pumpkin, squash, sweet potato, fruits. 



Specimens examined: Delaware, Cummins; Kansas, Fung. 

 Cohimh. i6yj; Kingston, Jamaica, Ellis Collection 66; New 

 Jersey, Ellis Collection 1628; New York, Underwood and Cook 

 8p; Nebraska, Pound; Pennsylvania, Sumstine; South Carolina, 

 Raven el 622, 8p'; Washington, D. C, Galloway. 



Illustrations: Malpighius, /. c. pi. 28, f. 108, e, f, g; Corda, 

 Icon Fung, i : pi. 11, f. /8, pi. 12, f. 83; Link, Ges. Naturf. 

 Freunde Berl. Mag. 3 : pi 2, f. 43; Fischer, /. c. f. jp. 



2. MucoR ARRHizus (Fischcr) Hagem, Norweg. Mucorineen 



37. 1908 



Rhizopus arrhizus Fischer, /. c. 233. 1892. 



The stolons are less developed than in the preceding species ; 

 the sporangiophores grow from the nodes in umbels or corymbs ; 

 the spores are round or oval, irregular, angular. 



Substrata : On bread. 



Specimens examined: Pennsylvania, Sumstine. 

 Illustrations : Hagem, 1. c. 



3. Mucor nodosus (NamysL). 

 Rhizopus nodosus Namysl. Bull. Acad. Sci. Cracovie. 1906. 

 (This paper was not available.) 



The few rhizoids, the branching sporangiophores, the somewhat 

 flattened columella, and the peculiar nodes or swellings in the 

 sporangiophores characterize this species. 



Substrata: On sterilized bread. 



Specimens examined: Pennsylvania, Sumstine. 



Illustrations: Lendner, /. c. 122. 



Species Reported 



Mucor rhizopodiformis Cohn, Zeitschr. f. Klinische Medicin 

 7 : 148. 1884. Rhizopus Cohnii Berlese & de Toni ; Sacc. Syll. 

 Fung. 7 : 213. 1888. 



A'o. ig^G in the Ellis Collection is labeled Rhizopus Cohnii. 

 The plants were found growing in kraut barrel attached to 

 sides." The spores are small and regular in form. Attempts to 

 germinate some of the spores were unsuccessful. The species is 

 considered pathogenic in dogs and rabbits. 



