106 A Mo7iof/raph of the Myxogastrei^. 



Owing to an oversight, Encrtlienema Bcrkeleyana was intro- 

 duced by Cooke in Myx. Brit., p. 51, as a native of Britain. 

 Tliis species, so far as I am aware, has only been met with in 

 S. Carolina, and is known by the clustered spores. 



(Rostafinski's Synonyms.) 



Arcyria atra, Schum., Saell, no. 1487; Fl. Dan., t. 410-i 



(1803). 

 Enerthencma elegans, Bowm., Trans. Linn. Soc, xvi., p, 151, 



t. 16 (1828). 

 Stemonitis mammosa, Fr., iii., 161 (1829). 

 Stcmonitis papillata, De Bary, I.e. (1859). 

 Encrthcnema p]iocnicolcp)ta, Bowm., msc. 



Enerthenema Berkeleyana, Rost. 



Sporangia stipitate, globose, blackish, wall evanescent ; stem 

 black, very thick at the base, conical, becoming contracted into 

 a thin, cylindrical, black columella that reaches to the apex of 

 the sporangium, and there becoming expanded into a disc ; 

 capillitium threads dark, springing from the margin of the disc, 

 pendulous, sparingly forked, rarely joined laterally ; spores 

 blackish-purple in the mass, at first in chisters of 4 — 14, sub- 

 triangular at ^rst, free portion warted, 10 — 13 /x diameter. 



Enerthencma Bcrkeleyana, Rost., Mon., Append., p. 29 ; Cke., 

 Myx. Brit., p. 51. 



(Type in Herb. Berk., Kew, no. 10888.) 



On boards. South Carolina. 



Closely resembling S. elegans, but distinct in the clustered 

 spores that are warted on the free surface only. The stem is 

 not always thickened below. 



Enerthenema muscorum, Lev. 



Gregarious, black ; stem setaceous, smooth, expanding at the 

 base into a shield-like hypothallus ; sporangium smooth ; tubes 

 of the capillitium springing from the lenticular apex of the 



