Holm — Additions to tJie Flora of lVashfji[/ton. 9 



206. Ranunculus septentrionalis Poir. 



Hig-h Island. E. L. Greene; swamps near Marshall Hall. 



33. Caulophyllum thalictroides Michx. 

 Ravine near moutli of Scott's Run, Va. 



34. Jeffersonia diphylla Pers. 

 Ravine near month of Scott's Run, Va. 



40. Papaver dubium L. 



Meadow near mouth of Scott's Run, Ya. 

 47. Nasturtium sylvestre R. Br. 



Wet places among rocks at Great Falls; on the river-shore at the 

 mouth of Scott's Run, Va.; High Island; ditches near Alexandria. 



4ga. Nasturtium palustre 1). ('. var hispidum Fisch. & Mey. 

 Ditch near Marshall Hall. 



61. Cardamine hirsuta L. {('. iuteinitedia Horn.") 

 SAvamps near Terra Cotta. 



6iu. Cardamine parviflora L. 



Abundant in the woods near Soldiers' Home; Sandy Landing; Great 

 Falls and several other places; evidently not uncommon in the District. 

 635. Cardamine silvatica Link. 



Ditch near Soldiers" Home. 

 62r. Cardamine Pennsylvanica Muhl. 



Common in swamps at Great P\ills: in a creek at Forest Glen. 

 63. Dentaria lieteropliylla Xutt. 



Common in the woods from Sandy Landing to Great Falls. 

 *64a. Denlaria diphylla L. 



Rocks at Glen Echo Junction. In flower first week of April. 

 *68a. Sisymbrium altissimum L. 



Near Eckington, along Florida Avenue. E. L. Greene. 



71. Erysimum cheiranthoides L, 

 River-shore near mouth of Scott's Run. 



72. Camelina sativa Crantz. 



Not uncommon in Brookland, along the railroad track and in vacant 

 lots. 

 78. Thiaspi arvense L. 



Along the road near Great Falls" Hotel; a few specimens on a lawn in 

 Brookland. 



86. Viola villosa Walt. 



Very abundant in the woods at Forest Glen; not uncommon in sandy 

 or gravelly soil near Terra Cotta, Soldiers' Home and Brookland. 

 86rt. Viola affinis Le Conte. 



Very common in shaded woods and swamps, for instancy near Ecking- 

 ton, the Reform School, Riggs' Mill, Marshall Hall, etc. 

 866. Viola papilionacea Pursh. 



Common in deciduous forests. 



