Steele — Additions to the Flora of Washington. 65 



commonly one blooming stem of last year's wood, a young shoot for the 

 year to come, and often a dead stalk of the preceding year. Fruiting 

 stem often only from one to two feet long and ascending or nearly erect. 

 *255</. Rubus villosus roribaccus Bailey. 



A plant thought to correspond to this name grows near the First lock 

 and on higher ground near the adjacent District line. The stems are 4 or 

 5 feet long, spreading, not prostrate, sometimes low, but often 2 or 3 feet 

 from the ground. One clear case of rooting at the tip was observed. 

 The prickles are slender, but formidable, especially on less vigorous 

 branches, where they multiply. Only trifoliolate leaves have been ob- 

 served, but others may exist on young shoots. The leaflets are oval or 

 oblong lanceolate, the larger 3 inches long by 1| inches wide, doubly 

 serrate with cuspidate teeth, finely appressed pubescent beneath, in a 

 le.ss degree above. The splendid flowers have the petals (including the 

 claw) an inch long, suborbicular, slightly ovate or obovate. Fruit not 

 yet seen. The whole plant is on a larger scale than R. villosus {R. Cana- 

 densis of authors) and when it is well known it will certainly be regarded 

 as a distinct species. Possibly it is a different plant from Professor 

 Bailey's. 



261. Geum vernum (Raf.) Torr. & Gray. 



Woods north of Glen Echo railroad, April 29, 1900. 

 267. Alchemilla arvensis (L.) Scop. 



A few specimens in dry ground near Holmead swamp, 1898. 

 *268a. Agrimonia mollis Bicknellii Kearney. 



Linnaean Hill road, August 18, 1899. I had noticed the peculiarity 

 of this form before I saw its description by Bicknell (Bull. Torr. Glub 

 23:. 547, 189(i). 



264. Rosa humilis lucida (Ehrh.) Best. 



I have specimens at least approaching this variety, from beside the 

 railroad near Cowdou's station, south Arlington. 

 2780. Malus angustifolia (Ait.) Michx. 



A small tree apparenlly of this .species stands west of the railroad on 

 the edge of the dumping ground at Eckington, (May 25, 1900). The 

 leaves almost duplicate those of a specimen from Florida so determined 

 by Nash. There is a specimen in the U. S. National Herbarium, col- 

 lected I think by Dr. Parry in 1871, credited to the District of Columbia. 

 If this determination proves correct it will be a fair question whether 

 the trees mentioned in Ward's Flora as Pyrus coronaria are not also of 

 this species. 

 *287ffl. Amelanchier spicata (Lam.) Dec. 



Great Falls, May 30, 1899, in fruit. Mr. Sudworth says he has found 

 this near the city. 



281. Crataegus cordata (Mill.) Ait. 



Roadside, Riggs road beyond the Northwest branch; a grown tree with 

 numerous progeny. 



