IOWA DISCOMYCETES 99 



Iowa by the writer and the plants were found to occur in great 

 abundance in the locality named above. During the season of 

 1907 the same species was found in abundance on dead branches 

 of basswood along the Red River in North Dakota. It is prob- 

 ably not uncommon where the host occurs. 



Trichopeziza comata (Schw.) Sacc, Syll. Fung. 8: 431. 1889. 



Plate 25, f . 11. 



Peziza comata Schw., Trans. Am. Phil. Soc. II. 1: 173. 1832. 



Plants similar in external appearance to the preceding but 

 smaller scarcely reaching 1 mm. in diameter; hairs tapering to 

 a rather sharp point and covered externally with irregular gran- 

 ules, consisting of elongated interrupted ridges, very different 

 from those of the preceding; asci and spores indistinct. 



On decaying oak leaves Iowa City, common. 



Well distinguished by the habitat, size of the plants and the 

 peculiar markings of the hairs. In the specimens examined the 

 asci and spores could not be made out and it may be that the 

 plants are immature. 



Trichopeziza sulphurea (Pers.) Sacc, Syll. Fung. 8: 401. 



1889. 



Peziza sulphurea Pers., Tent. Disp. Meth. Fung. 33. 1797. 

 Lachnum sulpihureum Karst., Myc. Fenn. 1 : 176. 1871. 



Plants small, about 1 mm. in diameter, gregarious, sessile, 

 hemispherical, when dry closed, when moist expanded, clothed 

 externally with a dense covering of delicate hairs which are filled 

 with yellow coloring matter so that the whole plant when fresh 

 has a beautiful sulphur-yellow color, when dry becoming chest- 

 nut-brown ; hairs variable in length as long as 75/x, smooth below 

 and delicately rough near their apices; asci 65 to 75 by 6//., 8- 

 spored; spores fusiform, nearly straight or curved, with several 

 oil-drops, 16 to 20 by 2/a; paraphyses 2 to 4^ broad at their 

 apices. 



On dead herbaceous stems, Mt. Pleasant, Iowa. 



Two collections of this species were made in Mt. Pleasant. 

 The sulphur-yellow color and the habitat are sufficient charac- 



