146 



MINNESOTA MUSHROOMS 



Figure 116. -Urxula craterium 



shaped ; stem stout, 1-5 cm. l)v 4-8 cm., black, hairy, more or less grooved ; spores 

 clear, oblong, 25-30 X 10-12/x. The name refers to the shape of the cup. 



ACETABULA 

 Acetabula vulgaris 



C u p 2-5 cm. wide, 2-4 cm. high, disk dark brown, paler brown outside and 

 more or less scaly or scurfy, roughened by the ridges, cup-shaped, somewhat torn or 

 lobed at the margin; stem 1-2 cm. tall and thick, pale l)ro\vn. ribbed lengthwise, 



Figure 117. Acetabula vulgaris 



