78 MINNESOTA BOTANICAL STUDIES. 



Pustnlaria vesiculosa Rehm, Raben. Krypt. Fl. 1:3: 1017. 1896. 



Solitary or gregarious, sessile, very thick, fleshy, globose, ex- 

 panding to cup-like, campanulate, large, up to 4 or 7 cm. diameter ; 

 margin repand but incurved, somewhat notched ; hymeniuni light 

 brown, uneven from basal foldings ; exterior coarsely granular, 

 forming large irregular scales, often blistered ; base very thick and 

 excipulum often separating from the fleshy thick hypothecium ; 

 spores elliptical, obtuse, smooth, hyaline, eguttulate, 18-20 x 12 mic. ; 

 paraphyses branched, septate, filiform. 



On the ground. Abundant on moist clay in green-house and on 

 manure heap: Hennepin, Oct. 1899, Minnesota Mycological So- 

 ciety; Hennepin, Jan. 1907, Hone; Hennepin, Sept. -Nov. 1907, 

 Hone 820; Hennepin, June 1908, Hone loio. 



Exsiccati: Sydow-, Mycoth. March. 2864; Saccardo, Mycoth. Ital- 

 ica 331: Plates: Cooke, Mycogr. pi. 63. fig. 242; Grev. Scott. 

 Crypt. Fl. 2. pi. 107; Sow. Eng. Fung. i. pi. 4; Rehm, Raben. 

 Krypt. Fl. 1:3:992. fig. 1-4; Boudier, Icones Mycol. 2. pi. 257. 



6. Plicaria vesiculosa cerea (Sow.) 



Pccica ccrca Sow-. Eng. Fung. i. pi. 3. 1757. 



Plicaria ccrca Fckl. Symb. Myc. 327. 1869. 



Pustnlaria vesiculosa ccrca Rehm, Raben. Krypt. Fl. 1:3: 1018. 

 1896. 



Gregarious or caespitose, very much contorted by mutual pres- 

 sure, globose, expanding to cup-like, sessile, fragile, brittle, base 

 plicated into almost a stipe, up to 3.5 cm. diameter; 3 cm. high; 

 margin remains incurved, never repand, wavy, sometimes notched ; 

 hymenium yellowish-brown, smooth ; exterior whitish, coarsely 

 granular ; spores elliptical, obtuse, smooth, very thick-walled, egut- 

 tulate, continuous, hyaline, 14-18x8-9 mic; paraphyses filiform, 

 septate, slightly thickened at apex, up to 3 mic. wide. 



\'ery abundant upon ashes and manure heap : Hennepin, May 

 1903, Hibbard ; Ramsey, Sept. 1908, Hone 2000. 



The specimens dififer from Peziza vesiculosa Bull, in the fragile 

 texture and smaller spores. The spores run even slightly smaller 

 than is usually described for Pcziza ccrca Sow. 



Exsiccati : Sydow, Alycoth. March. 1465 ; Krieger, Fungi saxon. 

 1244 {Pustnlaria vesiculosa \diV. cerea (Sow.) Rehm). Plates: Sow. 

 Eng. fung. I. pi. 3. 



7, Plicaria badia (Pers.) Fckl. Symb. Myc. 327. 1869. 

 Pcziza badia Pers. Observ. IMyc. 2:78. 1796. 



