Natural History of District of Columbia — McAtee 17 



period from 1866 to 1873, when it was reorganized. In 1874 

 a committee was appointed to prepare a new catalog of the 

 flora of the District, the members being Dr. George Vasey, 

 Prof. J. W. Chickering, Dr. E. Foreman, Prof. Wm. H. 

 Seaman, and Mr. L. F. Ward. Their revised list of 1088 

 species — The Flora Columbiana — was published in Field 

 and Forest, the official organ of the Club, from April to 

 December, 1876. A supplement containing 112 additional 

 species was published in 1878. Meanwhile one member of 

 the Committee, L. F. Ward, pushed ahead independently, and 

 in 1882 published a Guide to the Flora of Washington and 

 Vicinity. It contained an important introductory chapter 

 describing local collecting grounds, the flowering seasons, 

 and containing statistics of the contents of the list and 

 comparisons with other lists. It included also an appendix 

 on plant collecting and making a herbarium, and a check 

 list. All of these special features were separately published. 

 One thousand two hundred and forty-nine species of 

 vascular plants were listed. Six lists of additions have been 

 published, appearing in 1884, 1886, 1892, 1896, April, 1901, 

 and June, 1901. 



A share of the credit for these supplemental lists belongs 

 to the I>otanical Seminar founded in 189.3 and the Wash- 

 ington Botanical Club organized in 1898. These were merged 

 in 1901 to form the Botanical Society of Washington. 



In 1906 a typewritten list of the vascular plants of the 

 District of Columbia was prepared for the use of the Society. 

 It contains 1,-598 species and has been used for some years 

 as a foundation upon which to build a more pretentious work 

 on the District Flora. This paper now in manuscript in- 

 cludes keys, brief descriptions and notes on distribution. 



BIBLIOGRAPHY. 

 Warden, David Baillie. 



Florula Columbiana, Sive enumeratio Plantarum in Territorio 

 Columbiae sponte nascentium; or Catalogue of the plants, shrubs 

 and trees which grow spontaneously in the District of Columbia. 



In "A Chorographical and Statistical Description of the District 

 of Columbia, the seat of the general Government of the United 



