CLASSIFICATION OF A.GARK 



prefers the deep moisl foresl humus. I. verna is partial to the 

 edge of groves, although widely round elsewhere. I have occa 

 sionally found il growing from the rery rotten cavities of 

 slumps or Logs. There is qo role which we can be sure thai they 

 may not break in their selection of a place to grow. 



The u'l'ims is with difficulty divided into natural sections. Tho 

 mycologists who laid the foundations of classification, like Fries 

 and Quelet, divided the genus by the different ways in which the 

 universal veil forma a volva. Prof. Atkinson bas Bhown thai a 

 Bingle species, .1. phal loidi s, may act, under differenl weather and 

 growth conditions, so thai some specimens can be placed under one 

 section, other specimens under another section. Monsieur Bondier 

 (Bull. Sue. Myc. Prance, is. L902) has pointed oul thai although 

 this is true, we can still tell them apart it' we take aCCOUnl <>f the 

 differences in the structure of the universal veil. For example, in 

 the "Phalloides" section the universal veil is membranous and 

 composed of narrow-celled hyphae, and the veil when it docs tear 

 in a circumscissle manner, leaves thin shreds on the cap, never 

 in the form of elevated warty-scales; while in the "Muscaria" sec- 

 tion the universal veil is composed of large, rounded cells which do 

 no1 cohere well, and hence the veil breaks in a circumscissle man- 

 ner, and leaves thick floccose waits on the cup. We will therefore 

 follow i he old divisions and group them in sections with reference 

 to the texture and dehiscence of the universal veil. Twenty-two 

 species have been so far found in the State, since the genus 

 Amanita, by virtue of its species with poisonous properties, is of 

 great interest, and its species need to be known as widely as p i 

 hie. it has seemed lies) to include in the following Synoptical key 



all of the species of the northeastern pari of the United States 

 that one migjhl he likelv to find in Michigan. 



'.— 



Key I" the s/„ <■:■ 



(A) Base of stem, or bulb, provided with a distinct, membranous, loose 

 cup-like sheath, or rarely with a shallow cup. 

 i Pileua orange-red, yellow or Btraw-colored. 



(b) Volva entire, large; pileus deep yellow to orange, striate on 

 margin, glabrous. »'>:'.!'. .1. caesarea Ft, 



(bb) Volva saucer shaped ; pileus straw-yellow, usually with tloccose 



warts, margin even. 649. 1. mappa Pr. (form B 

 (aa) Pileus white with delicate pinkish or cream colored ap] 



fibrillose scale. ; inner veil evanescent; volva I ntly 



rubescent. 645. .1. peckiana Kaui't". 

 <aaa) Pileus pure white; bulb rounded below. 



(hi I'ileus conical at first ; inner veil adhering to gill 



pileus. 643. .1. virosa Ft. 

 i bb 1 Pileus enn v.'\ to Bubcampanul 



DUlUS. 



