20 Bulletin 1, Biological Society of Washington, 1918. 



Ward, Lester P. 



Field and Closet Notes on the Flora of Washington and Vicinity. 

 (Abstract.) 



Bui. Philos. Soc. Wash, iv, 1881, pp. 64-119. Reprinted with 

 explanatory notes in Glimpses of the Cosmos, Vol. II, 1913, pp. 

 360-425. 



Practically the same as the introduction to his Guide to the Flora 

 of Washington. 



Guide to the Flora of Washington and Vicinity. 



Bui. 21, U. S. Natl. Museum, 1881, 264 pp., 1 map. 



A comprehensive local flora, listing 1,249 vascular plants and 131 

 cryptogams. A history of the making of this list is contained in 

 Glimpses of the Cosmos, Vol. II, 1913, pp. 448-464. 



Check list of the Flora of Washington, D. C, and Vicinity. 

 From Bui. U. S. National Museum, No. 22, 1882, pp. 148-207. 

 A reprint with same pagination of the check-list in the Guide to 

 the Flora of Washington. 



List of Plants added to the Flora of Washington from April 1, 

 1882, to April 1, 1884. 

 Proc. Biol. Soc. Wash., Vol. II, pp. 84-87, April 10, 1884. 

 41 additions and a few corrections. 



Knowlton, F. H. 



Additions to the Flora of Washington and Vicinity from April 1, 

 1884, to April 1, 1886. 



Proc. Biol. Soc. Wash., Vol. Ill, pp. 106-110, 1886. 



35 additions, besides 4 oak hybrids, here first catalogued. 



"Changes in nomenclature," pp. 127-129. "New localities for rare 

 species," pp. 129-132; "Species excluded," p. 132. 



Lehnert, E. 



A revision of the musci and hepaticae of Washington and vicinity 

 with numerous additions. 



Proc. Biol. Soc. Wash., Vol. Ill, pp. 110-118, 1886. 



Containing 238 species, which is 111 in addition to the Oldberg list. 



A list of the Lichens of Washington and Vicinity. 

 Proc. Biol. Soc. Wash., Vol. Ill, pp. 118-127, 1886. 

 251 species. 



Baker, Frank. 



Native Trees of the National Zoological Park. 

 Ann. Rep. Smiths. Inst. (1890), 1891, pp. 65-66. 

 46 species. 



