112 Holm — AddlllunH In (lie Flora oj WaahiiKjloii. 



270. Poteiium Canadense ]]«nth. c^ Hook. 



Swamp near Bladeiisburg. H. W. Hcnshaw. Holmoad 

 Swamp. Lester F. Ward and the author. 



282. Crataegus Oxyacantha L. 



Coreoran ^yoods; a single shrul). Tlie author. 



285. Crataegus parvifolia Ait. 



Beyond Silver Hill. CJ. W. Oliver. 



SAXIFRA a A CE.K 



289. Mitella diphylla L. 



South bank of Cascade Run, near the mouth. E. S. Burgess. 



291. Chrysospleuium Americanum Schwein. 



Rock Creek, nearly o^^posite Crystal Spring. Lester F. Ward. 

 Several places in the ravines above Aqueduct Bridge, on the 

 Virginia shore. The author. 



DROSEIiACEyE. 



300. Drosera rotundifolia L. 



Sarracenia Swamp and near Fort Ethan Allen. II. W. Hen- 

 shaw. Connnon in swamps east of Silver Hill. G. W. Oliver. 



MELASTOMACEM. 



*306(/. Khexia Mariana L. 



Near Accotink, Fairfax County, Virginia. William Hunter. 

 Clearing in the pine woods, Marll)orougli road. G. W. Oliver. 



LYTHRACEM. 



307. Ammania humilis Michx. 



Swamp in Piney Branch woods, and very common in swamps 

 between Eckington and Brookland. The author. 



ONAGRALE.E. 



*316f(. CBnothera putnila L. 



Brentwood road, opposite Eckington. Ijcster F. Ward. Dry 

 hills near Fort Myer ; (lowering in the second week of May. The 

 author. 



