PSEUDOPEZIZA. 195 



Pseudopeziza petiolaris. Mass. 



Ascophore minute, developing under the epidermis, its 

 presence indicated by a pale grey spot, then emerging 

 through an elongated slit, or less frequently through a 

 stellate rupture with 3-4 teeth ; often longish, marginate, 

 yellowish-grey, soft, | 1 mm. across ; asci clavate, small, 

 8-spored ; spores cylindric-clavate, obtuse, straight, con- 

 tinuous, hyaline, smooth, biseriate, 6-9 x 1|-2| /*; para- 

 physes filiform, septate, becoming gradually thicker upwards, 



IJL thick at the apex, colourless. 



Peziza erumpens, Grev., Scot., Or. Fl., t. 99. 



Hysterium petiolare, Albert. & Schweinitz, Comp. Fung. 

 Xisk., p. 59. 



Mollisia erumpens, Phil., Brit. Disc., p. 197. 



Mollisia petiolaris, Sacc., Syll., viii. n. 1460. 



Trocliila petiolaris, Eehm, Krypt.-Flora, Disc., p. 132. 



On dead petioles of leaves of sycamore and horse chestnut 



Resembling a small Hysterium or Lophodcrmium to the 

 raked eye. 



** On herbaceous stems and culms of Angiosperms. 



Pseudopeziza artemisiae. Mass. 



Gregarious or scattered, erumpent, sessile, at first closed 

 and turbinate, then expanding until almost plane, up to 



1 mm. across ; disc pallid, externally dark brown, often with 

 an olive tinge, margin pale; excipulum parenchymatous, 

 cortical cells irregularly polygonal, dark brown, 6-8 //, 

 diameter, smaller and paler at the margin ; asci clavate, 

 apex narrowed, base rather stout, 8-spored ; spores obliquety 

 2-seriate, hyaline, continuous, narrowly elliptical, ends 

 rather acute, straight or very slightly curved, 7-11 X 

 1 * 5-2 jj. ; paraphyses hyaline, about 3 p. thick at the slightly 

 thickened tips. 



Peziza artemisiae, Lasch, in Eab., Herb. Myc., n. 335. 



Mollisia artemisiae, Phil., Brit. Disc., p. 188. 



Pyrenopeziza artemisiae, Rehm, Ascom., exs., n. 66 ; Rehm, 

 Krypt.-Flora, Disc., p. 616 ; Sacc., Syll., viii. n. 1484. 



On dead stems of Artemisia vulgaris. 



Specimens examined in Rabenh., Herb. Myc., ed. ii. n. 623 

 (collected by Lasch) ; and Rehm, Ascom., n. 66. 



o 2 



