AGARICS WITH BLACK SPORES 



has made spawn of this species and culti- 

 vated it in small quantity. 



Agaricus silvicola (Plate V^, d), also an 

 inhabitant of woods, is almost pure white 

 except as to gills. It is described as some- 

 times tinged with yellow. This is a rather 

 small species, and it occurs in the summer. 

 So far as I am aware, this form has not been 

 intentionally brought into cultivation. I 

 have, however, obtained from commercial 

 spawn, and have continued to propagate, a 

 form which may prove to be this species. 

 If so, cultivation induces considerable 

 change in size and texture. 



Coprinus, ''Ink Caps/^ Besides Agari- 

 cus, there are many other genera of the 

 Agaricace(E with brown-black or purple- 

 black spores. Very few of these are sufE- 

 ciently large to be important from an eco- 

 nomic standpoint. Accordingly, one genus 

 alone, Coprinus, will here receive considera- 

 tion. This genus is characterized more par- 

 ticularly by the deliquescence of gills and 



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