HELOTIUM. 265 



On leaves of grasses, as Holcus and Dactylis ; also on 

 Carex pendula, 



Distinguished by the small si/e, ivory-white colour of 

 every part, and the minute spores. 



G. On Gymnosperms. 



Helotium sulphuratum. Phil., Brit. Disc., p. 161 ; 

 Sacc., Syll., viii. n. 917. 



Scattered or gregarious, shortly stipitate or sometimes ses- 

 sile, at first subglobose and closed, then expanded and becoming 

 slightly concave, margin more or less raised, entire, glabrous, 

 firm, pale lemon-yellow, 1|-2| mm. across ; hypothecium 

 composed of hyaline, slender, densely anastomosing hyphae r 

 passing into a parenchymatous cortex, cells polygonal, 7-1 0//. 

 diameter ; asci elongated, narrowly clavate, apex slightly 

 narrowed, 8-spored ; spores irregularly 2-seriate, smooth, 

 hyaline, continuous, mnltiguttulate, narrowly elliptical, ends 

 rather pointed, straight or very slightly curved, 15-21 x5 p.; 

 paraphyses hyaline, slender, apex slightly thickened, 3-4 //, 

 thick. 



Peziza sulphurata, Schum., Saell., p. 428. 



On dead, fallen pine leaves. 



Colour pale sulphur- or lemon-yellow ; stem sometimes 

 quite distinct, but short, at others almost entirely absent. 



Helotium advenulum. Phil., Grev., vi. p. 24. 



Scattered or gregarious, minute, hemispherical, then 

 concave or almost plane, white with a tinge of dingy yellow r 

 about ^ mm. across, rather tough, glabrous; stem slender, 

 often rather curved, glabrous, up to ^- mm. long ; excipulum 

 parenchymatous, cells irregular, rather large ; asci clavate r 

 apex rather abruptly narrowed, 8-spored ; spores irregularly 

 biseriate upwards, elliptic-oblong, ends obtuse, straight or 

 slightly curved, hyaline, continuous, 8-10 X 2-5-3 //. ~ T 

 paraphyses filiform, about 2 p thick, tip not thickened, 

 hyaline. 



Hymenoscypha advenula, Phil., Brit. Disc., p. 133. 



Phialea advenula, Sacc., Syll., viii. n. 1056. 



On fallen decaying larch leaves. Spring. 



Specimen in Phillips' Elv. Brit., n. 133, examined. 



