118 Holm — Additions to the Flora of Wasliinglon. 



558. Rhododendron viscosum Torr., var. glaucum Gray. 

 Swamp northwest of Terra Cotta. E. S. Burgess. 



559. Rhododendron vizcosum Torr., var. nitidum Gray. 

 Swamp northwest of Terra Cotta. E. S. Burgess. 



PYROLACE^E. 



564. Pyrola secunda L. 



Near Chain Bridge, on the Virginia shore. The author. 



PRIMULACE.K 



577. Lysiniachia numniularia L. 



Along a stream near Terra Cotta. 1. C. WilUams and the 

 author. 



*577((. Centunculus minimus L. 



Fiekl opposite the white school-liouse at Woodlawn, along the 

 Alexandria and Accotink turnpike ; last week of June. Wil- 

 liam Hunter. 



579. Samolus Valerandi L., var. Americana Gray. 



Abundant above and below Chain Bridge. J 

 mac 1)elow Analostan Island. G. B. Sudworth. 



APOCYNACE^. 

 585. Vinca minor L. 



Back of Uniontown, along a stream in a hedge of Sinilax ; 

 thoroughly estal)lished. Lester F. Ward. Hillside in South 

 Brookland. The author. 



585rt. Apocynum androsaemifolium L. 



Between Corcoran Woods and the Baltimore and Ohio Rail- 

 road. Ijcster F. Ward and the author. 



ASCLEPIABALE.E. 



594. Asclepifs obtusifolia Mirhx. 



Anacostia River below the l)ridge. Reform School. Terra 

 Cotta. E. S. Burgess. 



