110 Holm Additions to tlie Flora of Washington, 



PORTULACACE.E. 

 126, Claytonia Virgiuica L. 



A double-flowered form observed at Beaver Dam Branch. 

 Lester F. Ward. 



* 126a. Talinum teretifolium Pursh. 



Dry moorland beyond Silver Hill. G. W. Oliver. 



ELATINACE.E. 



* 1266. Elatine Americana Am. 



Near Chain Bridge, on the Virginia shore of the Potomac, 

 March, 1891. The author. 



HYPERICACE.E. 

 128. Ascyrum staiis Miclix. 



Very common in several swamps near Silver Hill. G. W. 

 Oliver. Accotink, Fairfax County, Virginia. William Hunter. 

 Swamp back of Hyattsville. Lester F. Ward. 



MALVACEAE. 

 *137. Althaea caniiabina L. 



Vacant lots south of the Capitol ; escaped from cultivation. 

 G. W. Oliver. 



* 138. Sida Napeea Cav. 



Potomac flats near the continuation of Eighteenth street; in 

 flower during the first week of October. E. S. Burgess. 



GERANIACE.E. 



*151. Floerkea proserpinacoides Willd. 

 High Island. M. B. Waite. 



ILIC1NE.K. 



*158a. Hex glabra Gray. 

 Swamp beyond Silver Hill. G. W. Oliver. 



