IMPORTANT POISONOUS PLANTS 99 



the state. A number of horses in Black River Falls, Wisconsin, a few years 

 ago, became diseased, it is thought, by means of this rust. It may produce a 

 form of Mycotic stomatitis. 



Pucciniaceae. 



Puccinia graminis Pers. 



Wheat and oat rust, especially the uredo stage, produces inflammation of 

 the mucus membrane of the mouth and nose. The dust coming from the straw 

 when the grain is threshed often causes serious disturbances. Other rusts 

 might be mentioned in this connection, like Puccinia coronata, Cda., the uredo- 

 spores of which have an effect similar to that of the common grass rust. The 

 above rusts are widely distributed in North America, Uromyces trifolii, Clover 

 Rust, is widely distributed on red clover and, according to several authorities, 

 is responsible for mycotic stomatitis. 



Polyporaceae. 

 Boletus felleus Bull. 

 It has a bitter taste and is poisonous. 



Agaricaceae. 



Lepiota morgani Pk. 



This fungus is very common in the fall in meadows, pastures, and lawns. 

 The cap is from 5 to 11 inches across. The gills or radiating plates beneath 

 the cap are brown when mature. The lower part of the stipe is somewhat en- 

 larged but no cup occurs. This when eaten by some people is known to produce 

 poisoning. 



Amanita muscaria L. Fly agaric. 



Used to poison flies in Asia. Poisonous to persons. 



Amanita phalloides Fr. Amanita. 



This species is very poisonous and no one should eat so-called mushrooms 

 unless he is familiar with them, 



Amanita spreta Pk. 



This species is said to be poisonous in Eastern North America. 



Amanita rubescens Fr. 



This species is said to be edible, but authorities recommend that it should be 

 used with great care. The same is true of A. solitaria. Both species are found 

 in E. North America. 

 Amanita verna Bull. 



This species is closely related to A. phalloides, but it is pure white in color; 

 it is deadly poisonous. A. virosa Fr. belongs to the same category. A. frosti- 

 ana Peck is also poisonous. 

 Clitocybe illudens Schw. Jack-my-Lantern. 



This species is common in Eastern North America and is phosphorescent. 

 While it is not dangerously poisonous, it is not edible. 



Phallaceae. 



Ithyphallus impudicus (L.) Fries. 



The common stinkhorn is probably poisonous. Its disagreeable odor, how- 

 ever, would seem to render it distasteful to animals. 



Lycoperdaceae. 

 Lycoperdon Bovista L. 

 The giant puffball is edible in fresh condition, when the flesh is white, but 



