﻿Underwood : The ternate Species of Botrychium 541 



of the California Academy of Sciences and that of Cornell Univer- 

 sity furnished each additional material of interest. 



Of private collections, that of Walter Deane, though of limited 

 range, contains the finest specimens from the Eastern States, 

 some of them of matchless perfection, in all 39 specimens; that of 

 Professor D. C. Eaton is very rich in forms, with jj specimens ; 

 that of Mr. Davenport with 44 specimens from this group, many of 

 which are scrappy, contains a number of interesting forms ; these 

 together with 112 specimens in our own herbarium, to say noth- 

 ing of literally thousands of specimens examined in the field have 

 furnished the data for this paper. Very much is yet to be known, 

 particularly of the species of Mexico, West Indies, and South 

 America. 



Columbia University, 



1 August 1898. 



* 



A Correction. 



March 



curred resulting in the necessity of renaming a species there de- 



scribed. We 



Selagixella arenicola Underw. 



Selaginella arenaria Underw. Bull. Torr. Bot. Club, 25: 129, 



1898, not 5. arenaria Baker. 



L. M. Underwood. 



8 October 1898. 



