The Ohio Naturalist, 



PUBLISHED BY 



The Biological Club of the Ohio State Uni-versity. 

 Volume XII. APRIL, 1912. No. 6. 



TABLE OF CONTENTS 



SCHAFFNER— The North American Lycopods without Terminal Cones 497 



Conger— Some EIntomophilous Flowers of Cedar Point, Ohio 500 



ScHAFFXER— Key to the Fruits of the Genera of Trees of the Northern United States, 506 

 JI ETC ALF— Meeting of the Biolog:eal Club 512 



THE NORTH AMERICAN LYCOPODS WITHOUT 

 TERMINAL CONES. 



John H. Schaffner. 



There has been some hesitancy among fern students in recog- 

 nizing the validity of Lycopodimii porophikmi Lloyd and Under- 

 wood as a species. By some it is regarded as a variety or form of 

 L. lucidulum Mx. This is probably due to the intermediate 

 character of the juvenile forms. Mature plants of L. porophilum, 

 however, as determined by the writer resemble L. selago L. more 

 closely. In Ohio one can collect either form without difficulty 

 and numerous specimens have been sent to the Ohio vState Her- 

 barium. The species was reported for Ohio by the writer in the 

 spring of 1905 (Ohio Nat. 5: 301) as occurring in Fairfield county. 

 In December, 1906, while in New York the matter was discussed 

 with Dr. Underwood himself and a careful examination was also 

 made of the original specimens at the New York Botanic Garden. 

 Since that time the Ohio plants have been L. porophilum to the 

 writer and the species a good species. 



Underwood's description in "Our Native Ferns and their 

 Allies, Sixth Edition, Revised" defines the typical Ohio specimens 

 very well and also gives the characterization of the two related 

 species correctly in their typical form, although it does not empha- 

 size the character of the general habit. Condensations of the 

 species, descriptions arc as follows: 



Lycopodium porophilum. Leaves flattened at their bases 

 and ultimately more or less reflexed. Prostrate portion of stems 

 short, abundantly rooting, curving upwards, then dichotomously 

 branching 1-3 times to form a rather dense tuft (.^-4- in. high) of 

 vertical stems, densely clothed ivith spreading or reflexed leaves; leaves 

 entire or very minutely denticulate. Sandstone rocks. 



497 



