98 



Mycologia 



This species was first described as a Hebeloma by Dr. Peck, in 

 1874, from specimens collected on mossy ground in swampy woods 

 in the Adirondacks. Professor Massee, in 1904, includes it in his 

 monograph of the genus Ino cybe, citing three European synonyms. 

 The form so abundant on the shaded portions of the lawn in 

 front of the museum building of the New York Botanical Garden 

 is darker in color than any specimens previously described. The 

 poisonous properties of this species have been discussed in Myco- 

 logia for September, 1909, and November, 1910. 



Naucoria semiorbicularis (Bull.) Quel. 



Common Naucoria 



Plate 40. Figure 2. X 1 



Pileus hemispheric to convex or rarely plane, gregarious, 2-5 

 cm. broad; surface glabrous, smooth, often cracking with age, 

 slightly viscid when wet, tawny or ferruginous to paler; lamellae 

 adnate or adnexed, broad, crowded, ferruginous ; spores ellipsoid, 

 smooth, brownish-ferruginous, 10-12 X 5-7/*,* stipe slightly en- 

 larged at the base, rather tough, stuffed, glabrous, yellowish-brown 

 or reddish-brown, 7-12 cm. long, 2-3 mm. thick. 



This excellent edible species is common on lawns and in pas- 

 tures 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 homogeneous brownish 

 colors and its lack of definite structural characters. 



Omphalia Volkertii sp. nov. 

 Volkert's Omphalia 



Plate 40. Figure 3. X 1 



Pileus infundibuliform to umbilicate, tough, flexible, scattered, 

 1-2 cm. broad, about 7 mm. high; surface glabrous, hygrophan- 

 ous, fuliginous, becoming avellaneous soon after picking ; lamellae 

 decurrent, distant, tough, discolored-avellaneous ; spores sub- 

 globose, smooth, hyaline, 4 /a; stipe crooked, tapering below, con- 

 colorous, glabrous, hollow, 1.5-2 cm. long, 1-2 mm. thick. 



This species was found abundant and widely scattered over a 

 low, mossy field east of the New York Botanical Garden, on May 

 22, 1910, by W. A. Murrill and E. C. Volkert. It is most closely 



