82 Steele Additions to the Flora of Washington. 



predominantly green. Further than this, the Chrysocoma tomentosa of 

 Walter and the Vernonia tomentosa of Elliott are narrow-leaved plants, 

 Elliott lays stress on this character, and Walter's expression is so distinct 

 that nothing short of clear herbarium evidence could justify us in re 

 ferring to his species a plant with the leaves above described. Besides 

 this, the National Herbarium contains two specimens that are almost 

 certainly the tomentosa of Elliott, and barring herbarium evidence un 

 known to me, probably that of Walter also. They are characterized by 

 their linear-lanceolate, scantily and finely serrate leaves, which are 

 whitish or grayish tomentose beneath, and by the rough and tomentose 

 inflorescence, almost exactly the characters given by Elliott. Mr. T. H. 

 Kearney, Jr., who collected one of these specimens in southern Virginia, 

 states that it is the most hydrophile of the [eastern] Vernonias, actually 

 growing in shallow water. Elliott's plant correspondingly grew in 

 ditches. The awns of Mr. Kearney's specimen are broken off, but in the 

 other specimen of the two above referred to, collected by C. F. Hyams 

 in South Carolina, the awns are present and well developed, although I 

 am not prepared to say that they are longer than in normal Novebora- 

 censis. I am accordingly inclined to regard Elliott's species as valid, 

 and Mr. Kearney also favors that view. 



There is in the National Herbarium a specimen collected by Professor 

 Alexander Winchell in Alabama, which has the pappus and the leaf-form 

 of V. glauca, though the leaves are rather smaller; but the latter are 

 densely puberulent and the awns are long iov.ylaiica. This might be the 

 variety tomentosa of Britton were it not for the long awns; it belongs, 

 however, not to Noveboracenais, but to glauca. 



3poc. Eupatorium maculatum L. 



Kenilworth, September 27, 1898. My specimens fail to show the flat- 

 topped corymb. 



*395. Eupatorium serotinum Michx. 



The only station known to me for this species is a point on the Eastern 

 Branch flats a mile above Benning's road. 



3pia. Eupatorium altissimum L. 



Specimens from Bethesda Park and elsewhere agree in form of leaf 

 with the figure in Britton and Brown's Flora; but collections from along 

 the river at Glen Echo, Chautauqua, and Great Falls show a remarkable 

 broadening of the leaf without increase of length. The width some 

 times reaches 1| inches. Compare Kuhnia eupatorioides. 



*4OOa. Eupatorium cannabinum L. 



A single specimen on the edge of the tide-bed at Hunting Creek on the 

 Alexandria side, a few rods from the wagon road, September 4, 1899. 

 Only a part of the plant was taken and it may be found again. 



403. Kuhnia eupatorioides L. 



Specimens were collected September 18, 1899, on the side of the ravine 

 at Difficult Run with the larger leaves ovate-lanceolate, contrasting 

 widely with the linear-lanceolate form which is common here. This 



