72 Steele Additions to the Flora of Washington. 



307. Rotala ramosior (L.) Koehne. (Ammanma hum-ills of Ward's 



Catalogue ) 



This plant is common in very wet places along the river (Chautauqua, 

 Jackson City, Hunting Creek, Bennings). Instead of the 2 to 6 inches 

 of the Illustrated Flora it grows with us from 6 to 12 inches high, and a 

 similar stature is shown by some specimens in the National Herbarium. 

 It branches freely when there is space, but when crowded the stem tends 

 to be simple. Alternate with the acute divisions of the calyx at its four 

 corners are broad appendages which fold inward over the ovary. The 

 flowers do not seem to be "very small". 



310. Decodon verticillatus (L.) Ell. 



In the swamp about the mouth of Oxen Run, August 18, 1900, then 

 coming into bloom; a small number of specimens. 

 *3iia. Chamaenerion angustit'olium (L.) Scop. 



I saw a plant of this species at Takoma Park in 189C or 1897. 



311. Epilobium coloratum Muhl. 



The form umbroxa Haussk. was collected at Bethesda, September 9, 

 1899. The leaves are very large. 

 318^. Kneiffia longipedicellata Small. 



Near Bladensburg, June 27, 189(5. Not rare in the eastern part of our 

 territory. It grows in open ground; when well developed it is a very 

 fine plant, far more handsome than K.fruticoxti. 

 350. Aralia racemosa L. 



Found by me only on Pimmitt's Run, where there were a good many 

 fruiting specimens on August 19, 1900. 

 *352. Hedera Helix L. 



A patch of the common ivy was seen in the woods below Congrees 

 Heights in 1897 or 1898. 

 348. Caucalis Anthriscus (L.) Huds. 



Of late years this plant has spread extensively on the Potomac flats, 

 and should it reach cultivated grounds it might prove troublesome. 

 *329a. Eryngium planum L. 



There were several specimens on the Massachusetts avenue terrace in 

 the summer of 1899, and also in 1900. 

 331. Sanicula Marylandica L. 



Near Chevy Chase, at Glencarlyn, and in a ravine at (Jlen Echo. 

 33Oa. Sanicula gregaria Bicknell. 



Feeder Dam Island, May 15, 189G; later along the river on the Virginia 

 side above Aqueduct Bridge, at Cabin John Bridge, and in a shady valley 

 beyond Cleveland Park, June 2, 1898, at which time I became acquainted 

 with Bicknell's description. 

 *33&b. Foeniculum Foeniculum (L.) Karst. 



Seen once on the Canal road and once on the Potomac flats dumping 

 ground. It does not establish itself here. 

 *339. Chaerophyllum bulbosum L. 



West of the fish pond, with flowers and fruit June 27, 1899; bulbs were 



