Steele Arfrfffion* to the Flora of Washington. 75 



631. Ipomoea hederacea Jacq. (/. Nil., of Ward's Catalog-lie.) 



Corn field on the way to Plummer's Island, August 24, 1897; also Great 

 Falls, Jackson City, and Chain Bridge. 

 635. Convolvulus spithamaeus L. 



Suitland road and south Arlington, near Cowdon's station. 

 6406. Cuscuta polygonorum Engelm. (C. chlorocarpa of Ward's 

 Flora.) 



Mr. L. H. Dewey collected this plant near Four Mile Run in October, 

 1898, and he has so determined specimens collected by me on the 

 Potomac flats, August :5, 1900. ' 

 609. Phlox maculata L. 



Swampy places in south Arlington: low ground north of Riverdale. 

 6i4tt. Hydrophyllum Canadense L. 



Ravine at Chain Bridge station, August 1, 1900, in fruit: a limited 

 number of specimens. 

 6170. Phacelia dubia (L.) Small. 



High Island, and at various points in the Seven Locks region. 

 616. Phacelia Purshii Huckl. 



Plummer's Island, May HI, 1897. 

 62pa. Heliotropium Europaeum L. 



Street in Alexandria, September 28, 1897. 

 *627. Asperugo procumbens L. 



Dumping ground, along the river front at various points, May 8 and 

 May 28, 1898. 

 628a. Lycopsis arvensis L. 



A single plant in waste ground, U street between Seventeenth and 

 Eighteenth streets, June 1C, 1897; also in the previous year, the same 

 individual. 

 *73ia. Scutellaria incana Muhl. 



Near the canal at Chautauqua, August 17, 189C, then past its prime; 

 not since met with. 

 732. Scutellaria parvula Michx. 



Linnaean Hill road, May 18, 1899. 

 729. Scutellaria saxatilis Ilidd. 



Rediscovered on the Virginia shore about a mile above Chain Bridge, 

 October 7, 1900: seen at Harper's Ferry the previous September. 

 *735. Dracocephalum parvitflorum Nutt. 



Fugitive specimens were collected on U street in 189(3. 

 713. Koellia mutica (Michx.) Britton. 



Paint Branch bottom, near Berwyn, September 3, 1900; the only time 

 it has been seen by me. I have collected all the other species mentioned 

 in Ward's Flora. 



*7O7. Lycopus Sherardi n. sp. (L t Virgimcus Michx. and many 

 authors, at least in part; not Linnaeus). 



Perennial by filiform branching stolons bearing pairs of leaves \ inch 



