48 NEW YORK STATE MUSEUM 



within, in its glabrous lemon-yellow stem and in its broader spores. 

 It is apparently a rare but very distinct species. 



Clavae simplices, laxe caespitosae vel gregariae, 2.5-4 cm longae, 

 clavatae, raolles, fragiles, obtusae, luteolae, deinde albescentes, ali- 

 quando minute rugulosae, farctae cavaeve, intra flavae; stipes 

 2-4 mm longus, glaber, flavidus; sporae oblongae vel ellipsoideae, 

 albae, 9-12 x 6-8 //. 



NEW YORK SPECIES OF INOCYBE 

 Inocybe Fr. 



Veil universal, subfibrillose, concrete with the cuticle of the 

 pileus, often free on the margin, webby ; lamellae subsinuate 

 (rarely adnate or decurrent) changing color, not cinnamon pul- 

 verulent; spores even, angular or rough, more or less brownish 

 ferruginous. Sylloge 5 762 



The species of this genus are generally of small or medium 

 size. They were formerly included by Fries in the genus Hebe- 

 loma, from which the universal veil concrete with the commonly 

 dry pileus specially distinguishes them. The prevailing color of 

 the pileus is brown in some of its shades. In no other genus of 

 the Agaricaceae is it more necessary to make use of the micro- 

 scope in the identification of the species, for the external resem- 

 blance in some is so close that microscopic examination of the 

 spores can not safely be omitted. The presence or absence of 

 cystidia is also a character of some importance in the classification 

 and identification of the species. Nearly all the species are terres- 

 trial, some growing in woods, others in pastures and open places. 

 A few occur on the ground and on decaying wood also. They 

 have been distributed in five sections for convenience of study and 

 the better understanding of their relations to each other. One 

 author has instituted a genus depending on the rough spore char- 

 acter but it does not seem to find much favor among mycologists. 



A microscopic examination of the spores would be necessary in 

 such a case before even the generic identification could be made. 

 Many of our species are rare or local, having been found but once 

 and in a single locality. 



In the following pages the arrangement of the sections as given 

 in Sylloge has been followed. The following key to the sections 

 is based on external characters and indicates the prominent char- 

 acteristic of each section. 



