HELOTTIDI. 259 



ends obtuse. 10—12 x 5-6 /i; paraphyses slender, hyaline 

 slightly clavate. 



Hymenoicypha renisporum, PhiL, Brit. Disc, p. 143. 



Ciboria renispora, SiOC., SylL, viii. n. 541. 



Giboria Sydowiana, Eehm, Hedw. 1SS5. p. 226 ; Kiypt.- 

 riora. Disc, p. 75 S ; Saec, STll.,-vdii. n. S40. 



On fallen and decaying cak leaves, especially on the petiole 

 and veins. 



rjpeeimens examined in Mlis, X. Amer. Fung., n. 2049. 

 and Eehm, Ascom., n. 802. 



Helotimn ptmctifonne. Phil., Brit. Disc, p. 168. 



Scattered, sesjile and attached ty a central point, at first 

 globose then almost or quite plane, margin often slightly 

 ■wavy, thin, glabrous, ■whitish or yello^wisli, i— | mm. across ; 

 excipulnm consisting of very slender; interwoven hyphae, 

 cortex parenchymatons, cells 5-6 /* diameter ; asci clavate, 

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

 liquely 2-seria'te, hyaline, continnous, linear-elliptical, 9-12 

 X 2 /i ; paraphyses slender, apex slightly thickened, hya- 

 line. 



Peziza pj.nHipynids, Grev., Scot. Crypt. Flora, p. 63, 

 pi. 63. 



Pseudohehtium punetiforme, Sacc, SylL, viii. n. 1229? 



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



On dead oak leaves. 



Species in Herb. Berk., Ke^w, accepted as typical. 



Helotimn immutabile. FckL, Symb. Myc, App. i., 

 p. 50 ; Phil., Brit. Disc, p. 162 ; Sacc, Syll., viii. n. t'S6. 



Epiphyllons, scattered, sessile or narrowed into a very 

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

 slightly ■wavy, margin acute, glabrous, pale yello-w, 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-A: /JL ; paraphyses hyaline, almost cylindrical, about 2 /i 

 thick. 



