64 Steele — ^[ihJUimi.-^ fo tin Whn'd of M^(i!<li!ii(/I(>H. 



52. Barbarea Barbarea (,L.) MacM. 



A form correspond inii' to B. vithjavis (irrndln \. (iray was collected on 

 a roadside at Cleveland Park, May 14, 189!). 

 52a. Barbarea stricta Andiz. 



Potf)inac fiats near dnmpinii' >:fiiund. May 11. 18U8. 

 49«. Roripa hispida (l)esv.) 15ritlun. 



Jackson City, Angust 1, 1899. 

 62f/. CarJamine arenicola l^ritton. 



Very abundant in moist ground on the Potomac Hats east ot the rail- 

 road, 1900. 



A Cardamine appearing intermediate between this and ('. PeuiisyJ- 

 T(tnira and growing on dry wooded hills r(^(|uires further attention. 



62a. Cardamine parviflora L. 



Woods, Kendall (.ireen. 



72«. Camefina microcarpa Andrz. 



This name api)lies to all the specimens 1 have seen, and [irohably {o 

 all those formerly taken as ■stifini. This plant was observed (|uite oxer- 

 running a field on New-cut road east of Conduit road. May !!(•, 1899. 

 56. A rabis patens Sulliv. 



South slope of the High Island ridge, in fruit. May 21, 1898. 

 71. Erysimum cheiranthoides L. 



Plummer's Island, June 22, ISv^T: Potomac Hals, .Inly 10, 1899. 

 *7ia. Conringia orientals (T>.) Dumort. 



A single specimen on dumping ground, rear of propagating grounds, 

 in 1899. 



*79a. Cleome spinosa L. 



Dumping ground on New-cut road, July 14, 1890. Seen in the previous 

 year near Pennsylvania avenue southeast, and in 1900 on dumping 

 ground along the river front. 

 249. Spiraea salicifoiia L. 



This can no longer be considered rare, as it has been observed in Ken- 

 ilworth swamp in small tiuantity; at the foot of the long hill on the 

 Glen Echo railroad: in a swamp in south Arlington; near Sligo, Mary- 

 land (Pollard): and on the edge of a bog north of Jierwyn. 



254. Rubus argutus Link. 



Our common high-bush blackberry. I am as yet uncertain whether 

 or not we have R. /lii/nibam/.s Hailey. 



*256a. Rubus trivialis Michx. 



Bennings, and swamp above Hyattsville. 

 254a. Rubus Enslenii Tratt. {H. rillosus Ii.umifusui< of AVard's Flora.) 



High ground near Dalecarlia reservoir, May 15, 1896; Seven Locks, 

 May, 1897. Later fouml at Lakeland, etc., and probably very common. 

 Trattenick's and Torrey's type specimens, as shown in Bailey's "Evolu- 

 tion of our Native Fruits," pp. liOo and :57G difl'er as to the form of the 

 leavefj. Both forms can be dviplicated from our material. Our plant has 



