268 NATURAL HISTORY BULLETIN. 



nal appearance, but are easily distinguished by the thick 

 milky juice which is golden yellow. The margin of the cup 

 is irregular and sometimes slightly wavy. 



Genus VII— H UMARIA Fries. 



Plants small, entirely sessile, for the most part red, or yel- 

 low. Hymenium plane or subconvex. Asci generally 8-spored, 

 sporidia elliptical or fusiform. Growing generally on damp 

 soil, often among moss. 



Two species are described both of which have fusiform 

 spores and are common among moss in shady places. 



KEY TO THE SPECIES. 



a — Asci 4-spored, spores fusiform ... //. teiraspora. 



a — Asci 8-spored, spores fusiform ... //. muralis. 



HUMARIA TETRASPORA {Fckl.) Sacc. 



Plate XI, fig. i. 



1874 Peziza tctraspora Cooke, Grev. Ill, p. 121. 



L889 Humana tctraspora Saccardo, Sylloge Fung. , VIII, p. 121. 



Cups sessile, gregarious or scattered, hymenium slightly 

 concave or plane, bright orange red, whitish near the margin, 

 2 to 3 mm. in diameter; asci clavate 4-spored; 20 to 22 by 10 

 microns; parphyses clavate at the apices, filled with orange 

 granules. 



Habitat — On shady mossy banks by the roadside, fall, Iowa 

 City. 



Plants scattered, on mossy banks in the late fall, small but 

 easily distinguished on account of their bright orange color. 

 The margin of the cup is bordered by a delicate white fringe. 

 The cups are similar in external appearance to those of 

 Humaria muralis Quel, but are smaller in size. The spores 

 are also similar in form and appearance to those of Humaria 

 muralis but are somewhat smaller in size and generally con- 

 tain one large central guttula and two or three smaller ones. 

 Spores are fusiform and attenuate at the ends. This species 



