PREFACE. 



This list is published to facilitate the preparation of a Flora 

 of Baltimore. The area to be included is a square, the side of 

 which is twenty-five miles, and the centre the City Hall of Bal- 

 timore. 



In 1837, Dr. Win. E. A. Aikin prepared a "Catalogue of 

 Plufiiogamous Plants and Ferns, native or naturalized, growing 

 in the vicinity of Baltimore, Maryland," which was published 

 in the " Transactions of the Maryland Academy of Science and 

 lit er a tur e." Dr. Aikin's Catalogue contains 1063 species (here 

 reduced to 1009), arranged alphabetically, and was compiled 

 from notes taken in 1834 and 1835 in Frederick County, and in 

 1836 in the vicinity of Baltimore. I have used Aikin's Cata- 

 logue, and Ward's "Guide to the Flora of Washington and 

 Vicinity," (with the additions of 1884 and 1886), each of which 

 I have reduced to the arrangement and nomenclature of Gray's 

 Manual, and have added such other plants as have been found 

 by myself and several others within the above limits, and a few 

 found jost outside, bat which may be expected within the 

 limits. These sources have been indicated by different marks, 

 so that this li-t piesentl distinct views of Aikin's Catalogue, of 

 Ward- Flora as far as the list extends, of the plants already 

 found within, and of a few found without our limits. 



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