GENERA AND SPECIES OF MUSHROOMS 



The members of this genus are, with two or three exceptions, 

 very common. Species of the genus are among the first to 

 appear in the spring and well reward the enterprising myco- 

 phagist for his early tramps. 



Species of Naucoria 



Naucoria semiorbicularis ; common naucoria. Plate XIII, 

 Species 92. 



On ground in open places; singly or in groups; May to 

 November; edible. 



Cap hemispheric, convex, or, rarely, plane; surface often 

 cracked when old; slightly gelatinous (viscid) when moist; 

 tawny or rusty-colored; i to 2 inches broad. 



Gills adjacent to or attached to the stem (adnexed or 

 adnate); broad; crowded (near together); rusty-colored. 



Stem rather tough; slightly enlarged at the base; smooth; 

 pithy (stuffed); yellowish-brown or reddish-brown; 3 to 4 

 inches long. 



Spores rusty; smooth; elliptical; 10-12 x 5-7 microns in 

 diameter. 



This excellent edible species is common on lawns and on 

 pastures and along roads and paths from May to November, 

 usually appearing after periods of wet weather. The beginner 

 will have difficulty in distinguishing it because of its homo- 

 geneous brownish colors and its lack of definite structural 

 characters. Murrill. 



See under Marasmius oreades. 



The genus Omphalia 



Mushrooms of this white-spored genus have thin caps, 

 decurrent gills and cartilaginous, stuffed or hollow stems, 

 somewhat thickened upward. 



The species of Omphalia are usually small, the cap rarely 

 exceeding an inch and a half in diameter. They usually have 



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