I vS THE AMERICAN MIDLAND NATURALIST 



1913, Small in Flora in 1913, indicate this species for the Indian 

 Territory, the type locality, I had no intimation that it had been 

 collected there, and by myself. Dr. Small does not even mention 

 this species in the first or second edition of his Flora. 



Having procured Dr. Greene's fifth volume ot Pittonia, which 

 I had not seen before, and also Rhodora, Volume 10, in which Prof. 

 Fernald has revised the species of EuThamia for the New Gray's 

 Manual, I began a careful study of the species found or likely to 

 be found in Missouri, and have studied all the material of these 

 species preserved in the Herbarium of the Missouri Botanical 

 Garden, 9 sheets from the United States National Museum 

 Herbarium, about fifty sheets from the Herbarium of the University 

 of Illinois, that in Mr. Mackenzie's private herbarium in New 

 Jersey, and all that in the Herbarium of the University of Notre 

 Dame, Indiana, for which courtesies I am ander obligations to Dr. 

 George T. Moore, Dr. William R. Maxon, Prof. William Trelease, 

 Mr. Kenneth K. Mackenzie and Dr. J. A. Nieuwland, to whom 

 thanks are here returned. 



The genus EuThamia is abundantly distinct in aspect and 

 characters from Solidago, as may be seen from the following diag- 

 nosis: 



Euthamia Nuttall, Gen. 2 : 162. 1818. 



Erect, paniculately branched herbs, perennial by long root- 

 stocks, with linear or linear-lancolate, entire, or minutely-serrulate, 

 sessile, 1-5 nerved punctate leaves, and very numerous small heads 

 of both tubular and radiate yellow flowers, clustered in the large 

 corymbose, convex or nearly flat-topped inflorescence. Bracts 

 of the involucre obtuse or acutish, or in far western species acute 

 or acuminate, in two sets, the outer 5-14, short, oblong, in about 

 3 series, the inner 7-14, linear-oblong, in about 3 series, appressed, 

 more or less glutinous or viscid. 



Receptacle flattish, fimbrillate.or pilose. Ray-flowers pistillate 

 usually more numerous than the disk-flowers, the rays small, 

 scarcely exceeding the involucre. Disk -flowers perfect. Anthers 

 obtuse at the base. Style-branches with linear-lanceolate appen- 

 dages. Achenes top-shaped or oblong, villous-piibesceut. 



Differs from Solidago chiefly in the fimbrillate or pilose receptacle 

 and in having the ray-flowers more numerous than the disk-flowers, 

 Solidago having an alveolate receptacle with the disk-flowers more 

 numerous than the ray-flowers. 



