256 FUNGUS-FLORA. 



margin sublobate ; stem very short, attenuated at the base ; 

 asci cylindraceo-clavate ; spores 8, subcylindrical or oblong- 

 elliptic, 7-10 x 2 /i; paraphyses filiform, slender. 



On Spiraea ulmaria in damp places. 



Cup about \-h a line broad. 



Not examined. 



Helotium humuli. De Notaris, Comm., i. p. 379; 

 Phil., Brit. Disc, p. 167 ; Sacc, Syll., viii., n. 999. 



Scattered or gregarious, sessile or contracted into a very 

 short stem-like base, at first subglobose then becoming 

 slightly concave or plane, sometimes slightly marginate, 

 firm, glabrous, pallid then yellowish, the disc often tinged 

 with tan, up to 1 mm. across ; hypothecium and excipulum 

 parenchymatous ; asci clavate, apex narrowed when young, 

 becoming broadly rounded at maturity, pedicel slender, 

 usually crooked, 8-spored ; spores irregularly 2-seriate, 

 hyaline, elliptical, ends narrowed, straight or curved 2-4- 

 guttulate, rarely 1 -septate, straight, or slightly curved, 

 15-18 x -i/z; paraphyses hyaline, 2 /x thick, tips slightly 

 thickened. 



Peziza humili, Lasch, in Eab., Herb. Myc, ed. i., n. 630. 



On dead hop stems. 



Allied to H. virgultorum, but distinguished by the sessile 

 or subsessile ascophores. 



Specimens examiner! in Kehm, Ascom., n. 60, and Sac- 

 cardo's Myc. Yen., n. 960. 



Helotium politum. Phil., Brit. Disc, p. 155; Sacc, 

 Syll., viii. n. 870. 



Substipitate, plane or slightly concave, glabrous, white ; 

 margin even, obtuse; the short stem gradually enlarged 

 from the base upwards into the cup ; asci cylindraceo- 

 clavate ; spores 8, elliptical, ends nearly pointed, 10-13 X 

 4—5 /x. 



On roots of some small plant under the surface of the soil 

 in a plantation. November. 



Ascophore J— f of a line broad, the short stem tapering 

 down wards to a point. When moist, shining. (Phil.) 



Unknown to me. 



