THE AGARICACEAE OF MICHIGAN 



Solitary. In low elm swamp. Ann Arbor. Rare. 



A beautiful little plant, usually hidden among the debris of the 

 woods. The stem is flexible, subcartilaginous and does not turn 

 reddish when bruised. It differs from the descriptions of the type 

 in the narrow gills. It appears close also to A. cruenta Quel, ex- 

 cel 1 1 in color. 



Eccilia Fr. 



(From the Greek, ekkoilo, I hollow out.) 



Pink-spored. Stem cartilaginous, hollow or stuffed, slender. 

 Gills decurrent, either attenuated behind or broadly adnato-decur- 

 rent. Pileus umbilicate or depressed, its margin at first incurved. 

 Spores angular. 



Terrestrial or lignicolous. Small, slender plants, corresponding to 

 Omphalia of the white-spored group; differing from the small 

 Clitopili in the cartilaginous stem. A very small genus composed 

 of rather rare species. 



The PILEUS is glabrous, silky, or somewhat squamulose in the 

 umbilicus; dry or hygrophanous. It is usually expanded and then 

 the center is depressed to strongly umbilicate. Its margin is at 

 first incurved and this character may persist until maturity. The 

 color varies from white to grayish and brown. The GILLS are 

 attached in two ways, either attenuate-long-decurrent or broadly 

 adnate and then slightly decurrent, remaining attached, i. e., not 

 seceding as a rule. They are often quite distant as in E. rliodocylix 

 Fr. or crowded as in E. atrides Fr. and E. polita Fr. They vary 

 from narrow in some species to broadly triangular in others. In 

 E. apiculata Fr., E. vilis Fr. and E. rhodcylicioides Atk. they are 

 distinctly gray; in others, white or dingy white, finally colored 

 by the spores. Some species possess cystidia, giving the edge a 

 minutely fimbriate appearance. The STEM is usually enlarged 

 somewhal at the apex where it expands into the membranaceous 

 pileus. It is truly cartilaginous, slender, and soon hollow or 

 tubular within. Some species have been described as solid, but 

 it remains to be seen whether these are not really only stuffed at 

 firsl by a differentiated pith. The color is often that of the pileus 

 or paler. The angular SPORES correspond to those of Leptonia, 

 Nolanea, Pluteus and one of the sections of Clitopilus. CYSTIDIA 

 usually absent; in /■:. pirinoides, E. rhodcylicioides Atk. and 

 /:. roscoallocitrina Atk. cystidia-like cells are present on the edge of 

 Kills. 



