HELOTIUM. 241 



glabrous elsewhere ; hypothccium and excipulum hyaline, 

 formed entirely of slender, interwoven hyphae, cortex con- 

 sisting of rather closely septate hyphae, forming oblong 

 cells, running in parallel series from stem to margin ; asci 

 narrowly cvlindric-clavate, apex slightly narrowed, 8-spored ; 

 spores mostly obliquely 1-seriate, hyaline, smooth, con- 

 tinuous, straight or very slightly curved, 9-11 x 2 fx; 

 paraphyses slender, hyaline, sometimes forked. 



On rotten wood, bark, &c. 



Specimen in Herb. Berk., Ivew, accepted as typical. 



Distinguished from other species having the stem more or 

 less downy or floccose, and by the smaller spores, which may 

 prove to be septate when mature. 



Helotium serotinum. Fries, Sum., Veg. Scand., p. 355 ; 

 Renin, Krypt.-Flora, Disc, p. 781. 



Gregarious or crowded, stipitate, closed at first then 

 becoming plano-convex, rather thin, clear yellow, glabrous, 

 1*5-4 mm. across; stem 2-7 mm. long, J-| mm. thick, 

 almost equal, yellow or orange; hypothecium and ex- 

 cipulum composed of slender, interlaced hyphae which 

 become parallel and septate to form the cortex ; asci 

 narrowly cylindric-clavate, apex slightly narrowed, 8-spored ; 

 spores irregularly 2-seriate, hyaline, continuous, smooth, 

 usually slightly curved, narrowly cylindric- fusiform, ends 

 somewhat pointed, 1-4-guttulate, 25-35 X 4-6 /x; paraphyses 

 slender, hyaline sometimes forked, tips not thickened to any 

 appreciable extent. 



Peziza serotina, Pers., Syn. Fung., p. 661. 



Helvetia aurea, Bolton, pi. 98 ? 



Hymenoscypha serotina, Phil., Brit,, Disc, p. 125. 



On dead branches of beech, and on dead leaves in damp 

 places. 



Somewhat resembling H. luteolum in the crowded habit 

 and bright yellow colour of the ascophore, but distinguished 

 by the longer spores and slender, cylindrical paraphyses. 



Specimen examined in Fuckel's Fung. Rhen., n. 1157. 



Helotium navum. Phil., Brit. Disc, p. 157; Sacc, 

 Syll., viii. n. 915. 



Gregarious or scattered, stipitate or nearly sessile, at first 

 closed and piriform, then expanding and becoming saucer- 



VOL. JV. R 



