ADDITIONS TO THE FLORA OF WASHINGTON 



AND VICINITY, FROM APRIL i, 1884, 



TO APRIL 1, 1886. 



By F. H. Knowlton, B. S. 



[The following notes are supplementary to Ward's " Guide to the Flora of Washington and 

 Vicinity " (Bulletin No. 22, U. S. National Museum). The species added to the Flora between 

 April 1, 1884, and April 1, 1885, were enumerated by Prof. Ward in a paper read before the 

 Society Dec. 13, 1884 ; the additions and changes for 1885 were presented by the aiithor in a 

 paper read March 20, 1886. The first collector of each species is given due credit in the 

 proper place.] 



ANALYSIS. 



I. List of Vascular Plants added to the Flora from April i, 1884, 



to April 1, 1886 ■ . . p. 106 



II. Revision of the Musci and Hepaticre of Washington and Vicinity, p. no 



III. List of the Lichens of Washington and Vicinity p. 118 



IV. Changes in Nomenclature p. 127 



V. New Localities for Rare Species p. 129 



VI. Species Excluded p. 132 



I. LIST OF VASCULAR PLANTS ADDED TO THE FLORA OF 

 WASHINGTON FROM APRIL 1, 1884 TO APRIL 1, 1886. 



IK?. Trautvetteria palmata, Fischer & Meyer. 



Great Falls, Virginia side. Mr. J. S. Barker, June 22, 1884. 

 Also found on the Mt. Vernon estate by Mr. William Hun- 

 ter, June 21, 1885. 

 22c/. Caltha palustris, L. Marsh Marigold. 



Rock Creek. Collected by Mr. Gerald McCarthy in 1884. 

 99x7. Polygala Curtissii, Gray. var. pycnostachya, Gray. 



Collected south of Arlington P. O., near Four Mile Run. June 

 29 and July 30, 1884, and on the Marlboro' road, August 3. 

 1884, by Prof. Ward. Specimens of this plant have been 

 sent to Dr. Asa Gray, who states that he considers this 

 form to be the type, and that the original specimens col- 



106 



