51 



object whatever in starting a pin oak in that particular spot. 

 There are no planted pin oaks in the vicinity. All of our evidence 

 clearly indicates that the tree discovered by Mr. Howe is native. 

 As such this tree is doubtless the most westerly individual of the 

 pin oak yet discovered growing under natural conditions, and to 

 all appearance native. This adds another species to the list of 

 native trees of Nebraska, a list which now contains about sixty- 

 five species. 



The specimens which Mr. Howe collected are now deposited 

 in the herbarium of the Botanical Survey of Nebraska. 



It may be of interest to the readers of this journal, in connec- 

 tion with the above note, to have a list of all of the native oaks 

 of Nebraska. The list follows: 



Bur oak, Quercns macrocarpa Michx. 



Red oak, Quercus rubra L. 



Black oak, Quercus velutina Lam. 



Scarlet oak, Quercus coccinea Moench. 



Black jack oak, Quercus marilandica Moench. 



White oak, Quercus alba L. 



Swamp white oak, Quercus bicolor Willd. 



Yellow oak, Quercus acuminata (Michx.) Sarg. 



Low yellow oak, Quercus prinoides Willd. 



Laurel oak, Quercus imbricaria Michx. 



Pin oak, Quercus palustris Du Roi 

 The bur oak is by far the most abundant and most widely 

 spread species of the genus in this state. The species is found 

 very commonly in the drier sites in the gallery woods along the 

 streams quite generally over the eastern half of the state. The 

 commonest oak associate of the bur oak is the red oak, although 

 the latter is not nearly so widely distributed or as abundant as 

 the bur oak. On the dry exposed bluffs the bur oak is often 

 dwarfed to such a degree as to form a chaparral-like association, 

 often called "scrub oak." 



Except for bur oak and red oak our native oaks are very nearly 

 all restricted in their distribution to the area south of the Platte 

 river along the bluffs and ravines of the Missouri ri\-er and ex- 

 tending westward along the tributaries of the latter stream for a 



