8o MINNESOTA BOTANICAL STUDIES. 



Solitary or gregarious, sessile, globose becoming expanded cup- 

 like, up to 3 cm. in diameter, 2 cm. high ; margin incurved, thick, 

 firm, fleshy, base often plicate or puckered in, but not drawn in to 

 form a pseudostipe ; hymenium pale brown, smooth ; margin cut 

 and notched, irregular; exterior very scurvy to blistered, lighter 

 colored; spores elliptical, obtuse, finely verrucose, eguttulate, hya- 

 line, 16-18x8-10 mic. ; paraphyses filiform. 



On ground, June, Sheldon. 



The specimens having been preserved in alcohol have become 

 a dirty white color all over with the hymenium a slightly darker 

 shade. It dififers from Peziza vesiculosa and Pecica isochroa in 

 the larger rough spores and more scurvy exterior. 



Exsiccati: Sydow, Mycoth. March. 1469, 1747: Plates: Batsch. 

 Elench. Fung. Cont. i. f. 157; Cooke, Mycogr. pi. yy. fig. 298; 

 Rehm, Raben. Krypt. Fl. 1:3:991. fig. 1-4. 



5. HUMARIA FRIES. 



Cups gregarious or caespitose or solitary, fleshy, mainly small, 

 sessile, concave to subconvex, generally red or yellow ; exterior 

 smooth or rough, not hairy ; spores elliptical or fusiform, smooth 

 or rough, hyaline, continuous. 



1. Humaria humosa (Fr.) Cooke, Mycogr. 17. fig. 25. 1879. 

 Pcdza humosa Fr. Observ. Myc. 309. 1818. 



Gregarious, sessile, fleshy, dish-like to disk-like, up to 6 mm. in 

 diameter; margin dark brown, entire; hymenium brick-red, even; 

 exterior dull reddish grey, glabrous ; spores elliptical, obtuse, egut- 

 tulate, smooth, continuous, hyaline, uniseriate, 16-20x10-12 mic; 

 paraphyses slender, slightly clavate, septate. 



On damp sandy clay under red oak tree, bare ground; 1876, John- 

 son 550 (not preserved) ; Hennepin, June 1893, Butters 211. 



Plates : Cooke, Mycogr. pi. 7. fig. 25 ; Boudier, Icones Mycol. 2. 

 pi. 391. 



2. Humaria jonella (Quel.) Sacc. Syll. Fung. 8: 149. 1889. 

 Pesha jonella Quel. V. Suppl. Bull. Soc. Bot. de France. 24: 328. 



t. 6. f. 4. 1877. 



Mainly solitary', sessile, fleshy, urn-shaped, then expanded, up 

 to 7-8 mm. diameter ; hymenium lavender to lilac, even ; margin 

 finely and irregularly papillate ; exterior pubescent, granular, 

 lighter colored ; spores elliptical, elongate, acute, smooth, contin- 

 uous, pluri-guttulate, hyaline, 26-32x10-11 mic; paraphyses 



