482 FUNGUS-rLOEA. 



termination distinctly defined; there are generally two 

 notches in the margin of the adnate hymenium at its base, 

 indicating the two flaps of which it is formed, as in Spathu- 

 laria, to which the present species is closely allied. 



Var. alba. Mass. 



Entirely white, head subglobose ; in other respects resem- 

 bling the typical form. 



Mitrula alba, W. Gr. Smith, Grev., vol. i. p. 136, t. 10, 

 lower fig. ; Cooke, Mycogr., fig. 177; Phil., Brit. Disc, 

 p. 29. 



Among submerged leaves. 



Authentic specimen from W. G. Smith examined. 



Mitrula cucuUata. Fries, Summa Veg. Scand., 

 p. 347; Phil., Brit. Disc, p. 27; Cooke, Mycogr., fig. 176; 

 Sacc, Syll., viii. n. 100. 



Gregarious, stipitate, head variable in shape, ovate, conical, 

 or subglobose, 3-4 x 2 mm., even, pale cinnamon or brown- 

 ish, hollow; stem very slender, unusually flexuous, brown, 

 rarely pale, glabrous, sometimes minutely downy below, 

 cylindrical, l*5-2*5 cm. long; asci cylindric-clavate, apex 

 narrowed, S-spored ; spores hyaline, continuous, smooth, 

 narrowly elliptical, ends acute, straight or slightly curved, 

 10-12 X S./jL, irregularly 2-seriate; paraphyses slender, apex 

 slightly thickened. 



Elvella cucuUata, Batsch, Elench., fig. 152. 



On decaying pine leaves. 



Specimen in Phil., Elv. Brit., n. 53, examined. 



Mitrula viride. Karst., Myc. Eenn., i. p. 29 ; Sacc, 

 Syll., n. 124. 



Fasciculate, entirely dingy virdigris- green, head cylindric- 

 clavate, obtuse, terminating abruptly and irregularly below, 

 sharply differentiated from the stem, hollow, often com- 

 pressed, glabrous, rather slimy when wet, about 2 cm. long, 

 |-| cm. thick; stem about the same length as the head, 

 thinner, cylindrical, minutely squamulose, sometimes paler 

 in colour, flesh greenish ; asci cylindric-clavate, apex slightly 

 narrowed, 8-spored; spores hyaline, smooth, continuous, 

 elliptic, 2-seriate, 15-17 X 5/x; paraphyses slender, hyaline, 

 very slightly clavate. 



