272 A Monograph of the Myxogastres. 



Craterium Curtisii, Mass. 



Gregarious, sessile, obovate, fixed by a point to a very thin 

 hypothallus, umber-brown, wall thin, smooth or sometimes rugu- 

 lose, soon disappearing at the apex; capillitium dense, nodes 

 large, irregular, separated only by sJwrt constrictions, everywhere 

 containing pale brown granules of lime, the nodes become 

 confluent towards the base and form an irregular columella ; 

 spores brown with indistinct lilac tinge, globose, minutely warted, 

 7 8 n diameter. 



Badhamia Curtisii, Host., Mon. App., p. 3; Sacc., Syll., vii., 

 1, n. 1159. 



Didymium Curtisii, Berk., Grev., vol. ii., p. 65. (Type in 

 Herb. Berk., n. 10,758.) 



Scyphium Curtisii, Host, Mon., p. 149. 



On leaves, grass, &c. United States. 



Sporangial wall very thin, shining, containing very little or 

 no linjE. About 1 mm. high. 



Craterium Fuckelii, Mass. (n. sp.). 



Sporangia perfectly globose, contracted below into a short, 

 stout stem, every part brmvnish-ochre, upper portion breaking 

 away in an irregularly circumscissile manner; nodes of capil- 

 litium large, angular, combining towards the base to form an 

 irregular columella; spores dirty lilac, globose, rather coarsely 

 warted, 12 14 p diameter. 



Craterium mutabik, Fr., in Fuckel's Fung. Uhen., Exs., n. 

 1455. (Kew copy.) 



On wood. Germany. 



Distinct from C. aureum in the globose, differently-coloured 

 sporangia, the absence of the long, thin internodes of the 

 capillitium, and the larger, coarsely-warted spores. 



Craterium minimum, B. and C. 



Sporangia broadly elliptical, apex convex, breaking away in 

 an irregularly circumscissile manner, pale yellow, becoming 



