CLASSIFICATION OP A.GARK 



Bpores which are Larger and less truly spherical than in 1. mappa. 

 Prom ilif next species il is separated bj ii>- four spon ich 



basidium and by ii* stonier habit. Bill to the amateur, L. verna, 

 l. bisporigt ni ;uiil l. virosa will look alike, and ;i- thej are equally 

 |M.isinii>iis, lie aeed not separate them. Thej are onlj kepi 'li- 

 nnet for scientific reasons. The bulb, ;i- well as the adjustment 

 of the volva on ii varies considerably bo thai unless it can be 

 shown thai the microscopic characters differ, the BO-called "alba" 

 var. <>i .I. phalloides and I. verna proper are here combined into 

 our. it seems to have no soil preference with qs, although Boudier 

 says ii is partial to limestone land. I have found it on ,clay and 

 sandy soil in southern Michigan, and on the rocky foundations of 

 the Lake Superior region. See Chapter on Poisons. 



642. Amanita bisporiger At k. (Deadly Poisonous 



Botanical Gazette, Vol. 41. L906. 



Illustration: Atkinson. Mushrooms, Pig. 61, 1900 <;i- I. 

 verna I. 



I, ike .1. n ma, except in its more slender habit, and the B span d 

 basidia. Pileus IT cm. broad, stem 8-12 cm. long, 5-8 cm. thick 

 above the bulb which varies from 2-4 cm. in thickness. Whole 

 planl i- pure white, and only separable from .1. verna in the field 

 after some experience. I have examined tin' 2-spored character 

 frequently and it seems to he constant. 



Usually solitary. Throughoul the State, in hemlock or frondose 

 woods. One specimen was found growing from ;i rotten hemlock 

 trunk near its base, in the Huron Mountains, -inly to September. 

 Frequent. Poisonous. 



643. Amanita virosa Fr. Pi \i>i v Poisonoi - 



Hymen. Europ., 1 ^71. 



Illustrations : Pries, Sverig. atlig. n. gift. Svamp., PI. v i 

 Cooke, 111.. PI. 1. 



< ; i 1 1 1 - 1 . ( Champignons tie Prance, No. 6. 

 Atkinson. Mushr as, Pig. 62, p. 62, 1900 



Like l. verna, e\ce|. t thai ii has n conical pileus when j 

 the annulus is rarelv forme.], because the inner veil r< 



