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Fraxiims Americana, L. White Ash. 



This has been repeatedly reported for this state, but 

 the most authentic account of it in the state is the fol- 

 lowing from Prof. Williams' note book: "Twigs sent by 

 Mr. Jones from Sioux Falls to Dr. Trelease were pro- 

 nounced to be this species." If it occurs in the Minne- 

 sota or Sioux regions it is exceedingly rare, as for two 

 summers special effort has been made to detect it. 



GENTIANACE^. Gentian Family. 



Gentiana cletoiisa, Rottb. Fringed Gentian. 

 Gentiana serrata, Gunner. 



In cold spring bogs in the Minnesota valley; one sta- 

 tion in the Sioux valley; Elkton. 



Gentiana acuta, Michx. Northern Gentian. 

 Gentiana amarella acuta, Herder. 

 Near Custer in the Black Hills. 



Gentiana puberula, Michx. Downy Gentian. 



Common on prairies in the Minnesota and Sioux val- 

 leys. 



Gentiana Andrewsii, Griseb. Closed Gentian. 



In low places in the Minnesota and Sioux valleys; 

 common. 



Frasera speciosa, Dougl. Showy Frasera. 

 On dry, barren knolls in the Black Hills. 



Tetragonantlms deflexus, (J. E. Smith.) Kuntze. 

 Spurred Gentian. 

 Swertia deflexa, J. E. Smith. 

 In woods in the Black Hills. 



MENYANTHACE.E. Buckbean Family. 



Menyanthes trifoliata, L. Buckbean. Bogbean. 



In a cold spring bog near Elkton in the Sioux valley. 



