Plate XXXIII. 

 QUERCUS GAMBELII, Nuttall ? 



Remarks. The specimen forming the subject of this new Plate was obtained late in 

 July 1889, in Bear Creek Canon, near Morrison, Colorado, the locality representing about 

 the northern limit of Oaks in Colorado. The individuals here, although quite arboreal in 

 shape, exhibiting more or less of a distinct trunk and a shapely spread of branches, are 

 but shrubs in point of size, few of them attaining a height of ten or twelve feet; but they 

 make fruit abundantly. 



The large tree of the higher mountains four hundred miles to the southward never 

 exhibits the deeply lobed leaves with broad and somewhat angular sinuses and more or less 

 serpentine midvein which characterize this northern state, or variety, and render it as to 

 foliage the most beautiful of western oaks. Even in southern Colorado, where Q. Fendleri^ 

 Q. venusttila and true Q. Gambelii meet, I have not seen leaves like those here figured. 

 The form is perhaps peculiar to the lower mountains of middle Colorado. In its young 

 and infertile states it has, however, a leaf-outline not so peculiar, nor so unlike that of 

 the typical Q. Gambelii. 



While I do not venture to give to this a new name, even as a variety, I can not 

 repress a suspicion that it may ultimately prove worthy of such rank. But we have yet 

 too many things to learn about qualities of the wood, possible characteristics of acorns, 

 etc., in both this and the other supposed forms of Q. Gambelii throughout its vast range 

 a range embracing an empire's extent of country, no part of which has yet been 

 well explored. 



