Sturgis: Myxomycetes from South America 
39 
trechispora, that name was never published and is discarded by 
Rostafinski except as a synonym for his S’, dictyospora. Tor- 
rend (FI. Myx., p. 141) disregards Rostafinski’s authority in the 
matter and reverts to the earlier name, although the latter was 
evidently a nomen niidum. Massee (Mon. Myx., p. 84) rightly 
accepts the name S', dictyospora Rost, for the Venezuela specimen, 
while deploring the fact that Rostafinski did not see fit to validate 
the earlier name. It seems to me that Massee’s conclusion is the 
only correct one, though I can not concur with him in giving to 
these banded-spored specimens anything more than a varietal 
position. 
Stemonitis splendens Rost. Punta Arenas, Chile, February, 
1906; Palermo, Argentina, March and April, 1906. 
Stemonitis splendens var. Webberi (Rex) List. Punta 
Arenas, Chile, March, 1906. 
Stemonitis herbatica Peck. Palermo, Argentina, March, 
1906. 
Stemonitis ferruginea Ehr. Corral, Chile, December, 1905 ; 
Punta Arenas, Chile, February, 1906. 
Comatricha nigra (Pers.) Schroet. Punta Arenas, Chile, 
February and March, 1906. 
Comatricha typhoides (Bull.) Rost. Corral, Chile, Decem- 
ber, 1905 ; Palermo, Argentina, March, 1906. 
Comatricha typhoides var. heterospora Rex. Punta Arenas, 
Chile, March, 1906. A number of gatherings of this form show 
the same date and locality. In most of them the sporangia are 
of the usual narrowly cylindrical shape ; some, however, exhibit 
tufts of rather dark sporangia, almost sessile, and measuring only 
1.5 mm. in height by over i mm. in diameter. In these latter 
specimens the spores have a faintly reticulated surface, but the 
characteristic, scattered warts are barely, if at all, apparent. Such 
specimens evidently approach the dwarf forms of Stemonitis 
fiisca. 
Enerthenema papillatum (Pers.) Rost. Punta Arenas, 
Chile, February, 1906. 
Clastoderma Debaryanum Blytt. Corral, Chile, December, 
1905. This rare species is represented by a single very large 
gathering in fine condition. It is typical in every respect. 
