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 Bonn, Germany. 



ADIANTUM CAPILLU5- VENERIS IN PENNSYLVANIA? 



By Williard N. Clute. 



Several times during the past decade, Adiantum capillus- 

 veneris has been reported from various points in New York, 

 Pennsylvania and Maryland. This species, however, is usually 

 found in warmer climes and in consequence all reports of its 

 growing so far north have been set down as due to errors of 

 identification, the supposition being that young fronds of Adian- 

 tum pedatum have been mistaken for it. As far as mere latitude 

 is concerned, a locality for the fern in New York would not be 

 unusual, for the fern occurs plentifully at much higher latitudes 

 in the Old World, and it has also been found in abundance in 

 South Dakota. It would seem, therefore, that all reports of the 

 finding of the fern in northern stations should be carefully in- 

 vestigated rather than dismissed with the statement that the 

 report is due to a want of knowledge of the young stages of the 

 common maiden-hair, as has been done by a writer in this 

 journal. 



These observations have been suggested by the fact that 

 recently a small frond in fruit has been sent me for identifi- 



1 



