302 



STUDIES OF AMERICAN FUNGI. 



are rounded off without reaching the stem (Fig. 243). In all cases 

 when the lamellae reach the stem and are only attached by the 

 upper angle they are said to be adnexed. This term is often used in 

 combination with others, as sinuate-adnexed (Fig. 248, small figure), 

 or ascending adnexed (Fig. 248, larger plant). Sometimes the lamellae 

 are adnate, adnexed, etc., and have a slight decurrent process or 

 tooth as in Mycena galericulata (Fig. 245). In many plants the gills 



FIGURE 246. FIGURE 247. FIGURE 24^. 



FIGURE 246. Tricholoma, "ills sinuate, stipe solid. 

 FIGURE 247. Panasolus papilionaceus, gills adnate. 



FIGURE 248. Left-hand small plant, Hygrophorus, gills sinuate, adnexed. Right- 

 hand plant Panaeolus retirugis, gills ascending adnexed ; veil appendiculate. 



separate very readily from the stem when the plants are handled. 

 Sometimes merely the expansion of the pileus tears them away, so 

 that it is necessary to use great caution, and often to examine plants 

 in different stages of development to determine the real condition of 

 the lamella'. 



In certain genera the gills have special characteristics which may 

 be noted here. Usually the edge of the lamellae is acute or sharp 

 like the blade of a knife, but in Cantharellus and Trogia the edges are 

 very blunt or obtuse. In extreme forms the lamellae are reduced to 



