Additions to the Flora of Waslimgton. 31 



which Professor Ward had considered so common that no spe- 

 cial locality was recorded. Extended researches have, however? 

 induced me to arran2;e some of these among the rarer plants, 

 and I thought, also, that in this way a better idea of their dis- 

 tribution might be obtained. 



3. Clematis Virginiana L. 



Along the Canal road near the Eighth lock. G. H. Hicks. 

 10. Anemone nemorosa L. 



Banks, Four-Mile Run. R. R. Gurley. 

 13. Ranunculus pusillus Poir. 



A ver\' large s})eciinen was collected in a stagnant pool by Piney Branch, 

 at the north end of Seventeenth street. G. H. Hicks. 

 26. Aconitum uncinatum L. 



Near Chevy Chase. G. H. Hicks. 

 40. Papaver dubium L. 



Bank of Potomac above Rosslyn, Va., near the Seventh lock along the 

 Canal road. G. H. Hicks. 

 45. Fumaria officinalis L. 



Along Bates road near Bunker Hill. The author. 

 47. Nasturtium sylvestre R. Br. 



Potomac tlats near the Seventh lock. G. H. Hicks. 

 51. Nasturtium Armoracia Fries. 



Along a ditch near Terra Cotta, escaped. The author. 

 55. Arabis dentata T. & G. 



Along the Canal road near the Seventh lock. G. H. Hicks. 

 61. Cardamine hirsuta L. (C intermedia Horn.) 



Rock Creek. G. H. Hicks. The Zoological Park; in full Ijloom the 

 10th of May, 1895. The author. 



* 62(1. Cardamine parviflora L. 



Shaded woods in Brookland ; in moist, rich soil near Terra Cotta. The 

 aatlior. 

 ^" 62/;. Cardamine silvatica Link. 



Terra Cotta swamp ; R<K'k Creek. The author. 



* 62^. Cardamine Pennsylvanica Muhl. 



IMeadow near Rosslyn. T. H. Kearney, Jr. Rock Creek near the 

 Zoological Park ; in creeks on the Virginia shore of the Potomac, one 

 mile above Aqueduct Bridge. In flower the second week of May. The 

 author. 



It seems, according to the Synoptical Flora of North America,* that 

 these species of Cardamine are not well understood in tliis country. The 

 difficulty in distinguishing them is evidently due to insufficient European 

 material for comparison. The name Cardamine hirmta L. is very mislead- 



* Vol. I, part I. Continued and edited by B. L. Robinson, 1895, page 

 158. 



