630 



THE AGARICACEAE OF MICHIGAN 



diam., smooth; basidia 4-spored; no cystidia. TASTE farinaceous. 

 ODOR none. 



(Dried: Cap and gills brownish-tan to fuscous.) 

 Singly or few. Debris on ground, in hemlock, maple or birch 

 w Is. .Marquette, Houghton, Bay View and New Kichmond, ap- 

 parently limited to conifer territory. August and September. In- 



frequent. 



This Lepiota approaches the genus Armillaria in appearance, but 

 the gills are not attached to the stem. The annulus is sometimes 

 well-developed and flaring. 



666. Lepiota fischeri sp. nov. 



Illustration: Plate CXXVII in this Report. 



PILEUS 4-9 cm. broad, convex-eampanulate, obtuse, even, sub- 

 viscid, cuticle separable and continuous, fleshy, rather soft, white 

 to pale alutaceous. FLESH white, thick, rather soft. GILLS crowd- 

 ed, rather narrow, free and somewhat remote, plane, white, edge 

 entire. STEM 4-10 cm. long, 4-10 mm. thick, subbulbous, somewhat 

 curved, striate, fibrillose, solid, firm, fibrous-fleshy, separable 

 from pileiis. ANNULUS superior, large, membranous, at length 

 pendulous, white, subpersistent, fragile. SPORES minute, 3-4 x 

 2-3 micr., smooth, oval; basidia small, with 1 to 2 long sterigmata, 

 (5-7 micr. long), rarely 3 or 4, rarely also a forked sterignia, tramal 

 hyphae of gills divergent. TASTE slight ; odor becoming strong on 

 drying, like that of Tricholoma sulfufeum. 



(Dried plants: Pale alutaceous, gills brownish.) 



Gregarious. On ground in low frondose woods. Near Detroit. 

 September and October. Infrequent. 



Related to L. lenticularis (Amanita lenticularis Fr.), and is per- 

 haps its American counterpart. Our plants differ in lacking the 

 dark green drops oozing from apex of stem and annulus, (see Quelet 

 and Battaile, Flora Monographic des Anianites et des Lepiotes, 

 1902). and in character of stem which is said to be stuffed or hol- 

 low and floccose-scaly in the European plant. Quelet, Ricken and 

 Battaile give the spores 6 to 8 micr. It also differs from L. persoonii 

 Fr. in stem and gill characters. I have dedicated it to the ener- 

 getic student of mushrooms, Dr. O. E. Fischer of Detroit, who 

 found it. 



