HELOTIUM. 25£ 



ends obtuse, 10-12 X 5-6 //.; paraphyses slender, hyaline 

 slightly clavate. 



Hymenoscypha renisporum, Phil., Brit. Disc., p. 143. 



Ciboria renispora, Sacc, Syll., viii. n. 841. 



Ciboria Sydowiana, Eehm, Hedw. 1885, p. 226 ; Krypt.- 

 Flora, Disc, p. 758 ; Sacc, Syll., viii. n. 840. 



On fallen and decaying oak leaves, especially on the petiole 

 and veins. 



Specimens examined in Ellis, N. Amer. Fung., n. 2049 y 

 and Eehm, Ascom., n. 802. 



Helotium punctiforme. Phil., Brit. Disc, p. 168. 



Scattered, sessile and attached by a central point, at first 

 globose then almost or quite plane, margin often slightly 

 wavy, thin, glabrous, whitish or yellowish, \-\ mm. across : 

 excipulum consisting of very slender, interwoven hyphae, 

 cortex parenchymatous, cells 5—6 //, diameter ; asci clavate, 

 apex narrowed, pedicel long, slender, 8-spored ; spores ob- 

 liquely 2-seriate, hyaline, continuous, linear-elliptical, 9-12 

 X 2 fx ; paraphyses slender, apex slightly thickened, hya- 

 line. 



Peziza punctiformis, Grev., Scot. Crypt. Flora, p. 63, 

 pi. 63. 



Pseudohelotium punctiforme, Sacc, Syll., viii. n. 1229? 



Pezizella punctiformis, Eehm, Krypt.-Flora, Disc, p. 664 ? 



On dead oak leaves. 



Species in Herb. Berk., Kew, accepted as typical. 



Helotium immutabile. Fckl., Symb. Myc, App. i., 

 p. 50 ; Phil., Brit. Disc, p. 162 ; Sacc, Syll., viii. n. 986. 



Epiphyllous, scattered, sessile or narrowed into a very 

 short stem-like base, disc soon plane and discoid, circular or 

 slightly wavy, margin acute, glabrous, pale yellow, remain- 

 ing unchanged or with an amber tinge when dry, about 

 1 mm. across, cortex composed of long, narrow cells arranged 

 in parallel series from base to margin ; asci narrowly clavate, 

 tapering gradually from apex to base, 8-spored ; spores 

 1 -seriate, or irregularly 2-seriate upwards, hyaline, con- 

 tinuous, narrowly elliptical, ends rather blunt, 10-12 x 

 3-4 p ; paraphyses hyaline, almost cylindrical, about 2 /* 

 thick. 



s 2 



