y^^7j /ri Vol. 53, pp. 135-154 December 19, 1940 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON EIGHTH SUPPLEMENT TO THE FLORA OF THE DISTRICT OF COLUMBIA AND VICINITY. BY W. L. McATEE. In view of plans for a manual of the flora^ of a greatly enlarged region, including the area that has usually been adopted for publications on plants of the District of Columbia and vicinity, it seems desirable to summarize progress of knowledge since issuance of the Seventh Supplement' ten years ago. In the preparation of that pubKcation and the present one, the writer has acted as a compiler only. He is not an expert botanist and owes much to the contributions of numerous individuals men-tioned in the text. He is especially indebted to Neil Hotchkiss, F. J. Hermann, and S. F. Blake for critical comment as well as for notes on the flora. Doctors Hermann and Blake also have kindly gone over the manuscript and made numerous useful suggestions. Bibliographical references to publications cited more briefly in the following pages are: Bailey, L. H. Gentes Herbarum, I (5), Art. 6. Rubus: Enumeration of the Eubati (dewberries and blackberries) native in North America, pp. 203-297. 1925. Bailey, L. H. Gentes Herbarum, II (6), Art. 12. The black-berries of North America, pp. 270-^23. 1932. Hitchcock, A. S., and Paul C. Standley (et al.). Flora of the District of Columbia and vicinity. Contr. U. S. National Herbarium, 21, 329 pp., 42 pis. 1919. Cited as 1919 Flora. Hotchkiss, Neil. Flora of the Patuxent Research. Refuge,' iln charge of a Committee with E. H. Walker of the Smithsonian Institution as Chairman. »Proo. Biol. Soc. Wash. 43, pp. 21-54. 1930. 28— Pboc. Biol, Soc. Wash., Vol. 53, 1940. (135) DEC 2 8 1W0
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