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FERNWORT PAPERS, 



PRESKNTED AT A SECOND MEETING OF FERN STUDENTS, HELD 

 IN NEW YORK CITY, JUNE 27, 1900, UNDER 



THE AUSPICES OF THE LlNNAEAN FERN CHAPTER.* 



the Chapter. Issued December 20. 1900 



THE GENUS ISOETES IN NEW ENGLAND. 



Bv A. A. EATON. 



In the three seasons that have elapsed since the appearance of 

 Dodge's "Ferns and Fern Allies of New England," the study of 

 our local species of the genus hoetes has progressed so far that it 

 seems advisable at this time to present some of the results, and 

 state some of the problems, in order to elicit the co-operation of 

 collectors in clearing up some of the unsettled questions. As the 

 settling of these questions will pave the way to a larger and more 

 comprehensive work, this paper may be considered as preliminary 

 only . 



It appears advisable to give a history of the genus, so far as our 

 chosen territory is concerned, and in doing this we can do no better 

 than to adapt and extend Engelmann's chronological history in his 

 comprehensive account of the genus, given in Trans. St. Louis 

 Acad. 4:358-390. 1882. 



According to this, the first collection was at Upbridge, Mass., 

 by Robbins, in 1831. It was referred to riparia. 



1840. Robbins collected lacustris in the same town. 



1843. Tuckerman collected lacustris in Echo Lake, N. H. 



1845. Robbins found echinospora Braunii in Massachusetts. 



1848. Tuckerman found near Boston the species which bears 

 his name. 



1856. Engelmann found echinospora Braunii in Lake Winni- 

 piseogee, New Hampshire. 



1857. E. D. Eaton found Engelmanni in New England. 



* For an account of this Meeting, see Fern Bulletin for July, 1900. The first 

 gathering of those interested in American fern study occurred in Boston, 

 August 24, 1898, and the papers read were published early in 1899, under the 

 title, " Papers Presented at the Boston Meeting." 



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