l^he Ohio ^aturalist^T} 



PUBLISHED BY 



The Biological Club of the Ohio State University, 

 Volume X. JUNE, 1910. No. 8. 



TABLE OF CONTENTS. 



Stover— Xotes on New Ohio Agarics 177 



Hopkins— New Varieties of Common Ferns 179 



Sterki— Winter-Buds of Spirodela polyrliiza (L) 181 



Gary— Naiades of Grand River, Ohio . . 183 



Gary— Naiades of Cedar Point, Ohio 183 



SCHAFFNER— Xerophytic Adaptations of Apocyunm hypericifolium 184 



SCHAFFNER— A Proposcd List of Plants to be Excluded from the Ohio Catalog 185 



Dickey— Note on the Organization of the Biological Club of the O. S. U 190' 



Dickey— Meetings of the Biological Club 192. 



NOTES ON NEW OHIO AGARICS. 



WiLMER G. Stover. ' 



The following Agarics have not been previously reported 

 from Ohio. All were collected near Oxford, Ohio, by the writer, 

 unless otherwise noted. Most of them were determined or con- 

 firmed at the New York Botanical Garden or at Albany and were, 

 so far as possible, compared with specimens at those places, in 

 some cases with type specimens. 



My thanks are due to Dr. W. A. Murrill and C. H. Peck for 

 the privilege of examining specimens and other favors. 



The following notes are intended to present only the essential 

 characters of the species named. For fuller descriptions the 

 reader is referred to mushroom books. 



Lactaria rimosella, Peck. Pileus reddish-brown, dry, gla- 

 brous, becoming rimose-areolate ; latex somewhat watery; 

 lamellae close, decurrent; stipe colored like the pileus. June. 

 Plants identified by Miss G. S. Burlingham. North American 

 Flora, Vol. 9, Part 3, Page 198. 



Russula hiteobasis. Peck. Pileus red, becoming wholly yel- 

 lowish or in the center only; lamellae equal, white or creamy 

 yellow, adnexed; stipe stuffed, white above, yellow or orange- 

 vellow at the base. August. Bull. Torr. Bot. Club, 31: 179, 

 Apr. 1904. 



Russula crustosa, Peck. This plant is closely related to 

 R. virescens (Schaeff) Fr. and is doubtless often reported under 

 that name. The chief characters distinguishing it from R. vires- 

 cens are the subviscid pileus, the striate margin, smooth disk and 

 the small areolate scales of the pileus. It is more variable in 



