CLASSIFICATION OF A.GARICS 



Chamaeota Smith, \\ . G. 



(From ili«' Greek, chamai, on the ground. The old generic name 



Annularis is pre occupied, i 



Pink-spored. Stem fleshy, separabh from the pileus, with ;i per 

 sistenl or evanescenl annulus. <iills free. Spores rounded. 

 Terrestrial or Lignicolus. Fleshy, putrescent, ran mushrooms, 

 corresponding to Lepiota of the white-spored group. Thej differ 

 from Volvaria in having an annulus bul no volva. The annulus is 

 derived from an innei veil, svhicli is thin. The annulus is usualh 

 movable. Aboul a dozen species are 1^ i n »\\ 1 1 throughoul the world. 

 The i\\<> following species seem to be the oulj ones known in the 

 United States, and their discover}' is due to the careful and acute 

 observations of Sir. Bronson Barlow of Greenville, and Dr. O. E. 

 Fischer of the Detroil Mycological < !lub. 



572. Chamaeota mammillata (Longyear) Murrill 



.Midi. Acad, of Sci. Rep. 3, L902. (As Annularia.) 

 [llustration : [bid, PI. I. Fig. I. 



PILEUS 1 - <*iii. broad, plane a1 maturity ipith a prominent mam- 

 miform umbo ai the center, whitish, umbo lemon-yellow, surfi 

 minutely rough. FLESB very thin. soft. GILLS free, ventri- 

 cusc, broad, thin, close, 3 mm. broad, pale flesh color. s'N'.M 3 5 cm. 

 long, 1.5 mm. thick a1 apex, gradually enlarging toward base, gla 

 l. ions above and silky below the ring. ANNULUS membranous, 

 persistent, white. SPORES subglobose, smooth, 5-6 micr. diam., 

 pale flesh color. CYSTIDIA fusiform, inflated in the middle, 50 x 20 

 micr. 



Solitary. < >n decaying logs in woods. Greenville. July. Rare. 

 Reported by Longyear, collected bj Mr. Barlow. 



The type material is in the herbarium of Michigan Agricultural 

 College, East Lansing. 



