iQoi] Holm — Canadian Species of Gentiana. 177 



The specimens identified by Gray were of special importance, 

 and we might state at once that none of these represented the true 

 G. serrata, nor was the plant to be found in the collection of the 

 United States' National Museum. How it happened that Grav 

 could make such a mistake is not difficult to explain, since the 

 most exhaustive diagnosis of G. serrata is not only published in 

 the Scandinavian language, but, moreover, it is not very complete. 

 The original description in Latin by Gunner is so short that it 

 might well apply to the American plants of this group. By com- 

 paring the structure of the flower and especially the stamens and 

 the nectariferous glands, besides the leaves, it is not difficult to 

 find important differences between the European and American 

 plant, but these organs should not be studied from dried material 

 alone, and especially not from specimens that are pasted to the 

 sheets. The attempt to identify our Getiitana from Colorado has, 

 thus, resulted in an investigation of these various collections, and 

 we have reached the conclusion that G. serrata is not represented 

 in any of these. Inasmuch as most of the material examined was 

 from the British provinces, we have thought that Canadian 

 botanists might care to leurn what G. serrata is, and what it is 

 not. 



In considering the literature upon this subject, there are not 

 a few works to be consulted, those of Wahlenberg*, Fries'"', 

 Blytt" and Hartman" being the most important as concerns 

 G. serrata. 



The monographs by Froelich (1. c), Bunge" and Grisebach" 



* Wahleiiberg, G. Flora Suceica. Vol. i, p. 153. Upsala. 1824. 



' Fries, Elias. Summa vegfetabilium Scandinavise, Sectio I, p. 190. 

 Upsala. 1846. 



« Blylt, M. N. Norges Flora, Vol. i, p. 712. Christiania. 1861. 

 " Hartman, C. J. Handbok i Skandinaviens Flora, p. :;7. Stockholm. 

 1870. 



* Bung-e, A. Conspectus generis Gentianse, imprimis specierum Rossi- 

 carum. 



Nouveaux mem. soc. imp. natur. de Moscoii, \'ol. 1, p. 225. Moscou. 

 1829. 



" Grisebach, A. H. R, Genera et species Gentianearum, p. 256. Stutt- 

 gart. 1839. 



