LEPIDODERMA 147 



even, stout, rigid, no calcareous deposits nor vesicles; spores 8-10 jx, 

 minutely warted, fuliginous. 



Yosemite Canon, California, Prof. B. Shimek. 



This is, no doubt, similar to L. carestianum but differs in the size 

 and habit of the sporangia, and in the fact that the capillitium is 

 uniform throughout, whatever the style of fructification, and in the 

 size, color, and surface characters of the spore. 



Evidently not Didymium granuliferum Phill. Both will, no 

 doubt, be again collected, and we shall then have much needed light. 



Nor is this quite Rostafinski's species as cited. The spores are 

 much smaller; Rostafinski says 10-12 or more, and calls for a dis- 

 tinctly netted capillitium, the surface strongly marked by abundant 

 calcareous crystals. Ours may be a different thing. 



5. Colloderma G. Lister 

 1910. Colloderma, Jour, of Botany, XLVIII., p. 312. 

 Peridium double; the outer gelatinous, the inner membranaceous; 

 capillitium intricate, limeless. 



Colloderma oculatum (Lipp.) G. Lister. 



1894. Didymium oculatum Lipp,, Verh. Zo-Bot. Ges. Wien, XLIV., p. 74. 

 1910. Colloderma oculatum (Lipp.) G. List, Jour. Bot., XLVIIL, p. 312. 



Sporangia gregarious, globose, or sub-globose, sessile or short-stipi- 

 tate, olivaceous or purplish-brown, smooth and shining, the outer 

 peridium gelatinous, thickened by moisture, hyaline; stipe dark 

 brown ; columella none ; capillitium as in Didymium purplish-brown, 

 colorless at the tips; spores spinulose, fuscous, about 12 fi. 



New Hampshire, Europe. 



Our specimens from the late Dr. W. G. Farlow who collected it 

 in New Hampshire. Swollen by immersion in water the sporangia 

 take on an eye-like appearance, oculate, etc. 



EXTRA-LIMITAL 



Physarina von Hbhnel. 



1909. Physarina von Hohnel, Akad. IViss. IVien; Math-nat. KL., CXVIIL, 

 p. 431. 



