Monograph of North American Varices. 283 



A Monograph of the North American Species of Carex. 

 By the Rev. Lewis D. de Schwkinitz. Edited by John 

 Torrey. Read December 13, 1824. 



The principal part of the following monograph has been 

 written several years. About two years ago, the author, 

 with whom I have long enjoyed an active correspondence, 

 sent me a copy of the work for my private use, with permis- 

 sion to communicate it to the New-York Lyceum of Natural 

 History ; and 1 accordingly submitted it to that Society, who 

 directed that it should be published in their Annals. Various 

 causes, the chief of which has been a desire to make it more 

 complete by additions and corrections, have delayed its ap- 

 pearance until the present time. Mr. Schweinitz lately left 

 this country for Europe, with the expectation of being absent 

 for a considerable period. Previous to his departure, he 

 placed in my possession his rich collection of Carices, giving 

 me full permission to make any additions or alterations in his 

 manuscript, which my own observations or the recent dis- 

 coveries of others might render necessary. This privilege I 

 have thought proper to exercise to a considerable extent, the 

 author himself having made no changes in the monograph 

 since it was first put into my hands Within the last year, that 

 part of Mr. Elliott's work which includes the Carices, has been 

 published, and Professor Dewey's Caricography of the 

 Northern States has appeared in Silliman's Journal. Several 

 foreign botanical publications have also been received, which 

 have furnished important materials. Among them are 

 Brown's Appendix to Parry's Voyage, and Richardson's 

 Appendix to Franklin's Narrative ; the latter particularly, 

 has enabled me to make some valuable additions to the 

 monograph. A copy of a new edition of this work, together 

 with specimens of some of the rare Carices there described, 

 were kindly presented to me by the author. T am also under 



