HELOTIUM. 249 



base to margin; asci cyliudric-clavate, apex slightly nar- 

 rowed, pedicel elongated and slender, 8-spored ; spores irre- 

 gularly 2-seriate, hyaline, continuous, straight or very 

 slightly bent, narrowly elliptic-oblong, or the apex obtuse 

 and with a tendency to become clavate, 15-18 X 4-5 //.; 

 paraphyses slender, hyaline, tips scarcely thickened. 



Peziza calyculus, Sowerby, Eng. Fungi, pi. 116. 



Hymenoscypha calyculus, Phil., Brit. Disc, p. 136. 



Phialea calyculus, Sacc, Syil., viii. n. 1106. 



On wood and branches. 



Sowerby's type specimen, figured in " English Fungi," 

 pi. 116, examined. This specimen is now in the Berkeley 

 Herbarium, Kew. 



Differs from H. virgultorum in the glabrous stem and the 

 continuous spores. 



Helotium sublenticular^ Fries, Summa Veg. Scand., 

 p. 355 ; Kehni, Krypt.-Flora, Disc, p. 784; Sacc, Syll., viii. 

 n. 942. 



Scattered, stipitate, rather firm, at first closed and some- 

 what clavate, then expanding until quite plane or slightly 

 convex ; margin entire, often minutely upraised when ex- 

 panded, disc varying from being almost white, through pale 

 yellow to pale rusty, externally pale and smooth, when dry 

 the disc is yellowish or brownish, 1-5 mm. across ; stem 

 • 5-3 mm. long, and up to 1 mm. thick ; hypothecium formed 

 of hyaline, interwoven hyphae running out into a pseudo- 

 parenchymatous cortex ; asci cylindric-clavate, apex slightly 

 narrowed, 8-spored ; spores irregularly 2-seriate or some- 

 times almost obliquely 1 -seriate, hyaline, smooth, continuous, 

 narrowly elliptic-fusiform, straight or slightly bent, at first 

 continuous and 2— 1-guttulate, ultimately 1 -septate, 15-20 x 

 4-5 n ; paraphyses hyaline, about 2 /x thick, scarcely at all 

 thickened at the tip. 



On bark of birch, also on stumps. 



Specimen in Eehm's Ascom., n. 654, examined. 



Somewhat resembling H. ferrugineum, but distinguished 

 by the larger spores. 



Helotium moniliferum. Mass. (figs. 36-39, p. 290.) 



Ascophores scattered or somew r hat clustered, sometimes 



2—3 united at the base ; stipitate, seated among Bispora 



