Stemonitis. 87 



(Type in Herb. Berk., Kew, n. 10841.) 



On twigs, herbaceous stems, ferns, &c. 



Britain (Bardon) ; Germany. 



The peridium is sometimes almost white with a silvery sheen, 

 at others brown. From 4 6 //. high. Much shorter and not 

 so densely crowded as S. ferruginea. Quite distinct from S. 

 pulcherrima, B. and C. 



(Rostafinski's Synonyms.) 



Stemonitis pulchella, Bab., Trans. Linn. Soc., cfr. Berk., A. 



and M. (1841), p. 431, t. 12, f. 11 (1839). 

 Stemonitis tenerrima, Curtis, Sill. Journ., 1. c., p. 349 (1848). 



Stemonitis tenerrima, B. and C., Grev., n. 373 (1873). 

 i 



Stemonitis herbatica, Peck. 



Sporangia densely gregarious, stipitate, springing from a thin 

 hypothallus, sub-cylindrical, wall evanescent ; stem usually 

 shorter than sporangium, thin, blackish; spores in the mass 

 Irmvn ; columella reaching nearly to apex of sporangium ; 

 capillitium dense, peripheral meshes not larger than diameter of 

 spores, threads sometimes furnished with a few short, free ends ; 

 spores globose, very minutely ivartcd, 8 9 p diameter. 



Stemonitis herbatica, Peck, 26th Report State Mus., N. Y., 

 p. 75 ; Sacc., Syll., vii., 1, no. 1367. 



(Authentic specimen from author.) 



On living leaves, stems, &c. United States. 



Often in scattered, small, densely crowded clusters, 5 8 mm. 

 high. Allied to S. ferruginca in the colour of the spore-mass, 

 and in the small peripheral meshes of the capillitium, differing 

 in the very minutely warted spores. 



Stemonitis tubulina, A. and S. 



Aethalium at first white, soft, 1| 2 in. broad, 4 6 lines 

 high, orbicular, rarely sub-oblong, basal membrane stout, silvery, 

 pellucid, iridescent, easily removable from the substratum ; 

 surface very smooth, shining, with hemispherical warts above, 



