cuPULiFER^. SILVA OF NORTH AMERICA. 



93 



QUERCUS TOUMEYI. 



Leaves ovate or ovate-obiong or oval, entire or remotely spinose-dentate, blue- 



green. 



Quercus Tourney i, Sargent, Garden and Forest, viii. 92, f. 13, 14 (1895). 



A tree; from twenty-five to thirty feet in height^ with a short trunk six or eight inches in diameter 



dividing not far above the ground into 



spreading branches which form a broad 



irregular head. The bark of the trunk is about three quarters of an inch in thickness and is deeply 

 furrowed; dark brown tinged with red, and broken on the surface into small thin closely appressed 

 scales. The branchlets are slender, and at midsummer are Kght rather bright red and more or less 

 thickly coated with pale tomentum, and during their second and third years are covered with thin dark 

 brown nearly black bark broken into small plate-like closely appressed scales. The leaves are ovate or 

 ovate-oblong or oval, rounded or cordate at the base, acute and apiculate at the apex, entire with 

 thickened and slightly revolute margins or remotely spinulose-dentate, or often minutely three-toothed 

 at the apex ; they are thin but firm in texture, light blue-green, glabrous and lustrous above, pale and 

 puberulous below, from one half to three quarters of an inch long, from one quarter to one half of an 

 inch wide, and conspicuously reticulate-venulose, with slender midribs raised and rounded on the upper 

 side and thin arcuate primary veins ; they are borne on stout tomentose petioles about one sixteenth 

 of an inch long and probably fall early in the spring with the appearance of the new growth. The 

 flowers are unknown. The fruit is sessile, solitary or in pairs, and ripens in June ; the nut is oval or 

 ovate, one half or two thirds of an inch long, one quarter of an inch broad, light brown and lustrous, 

 and furnished at the acute apex with a narrow ring of pale pubescence ; the abortive ovules are at the 

 base of the seed ; the cup, which incloses about a quarter of the nut, is thin and shallow, cup-shaped 

 and tomentose, Hght green and pubescent within and covered on the outer surface by thin ovate regu- 

 larly and closely imbricated light red-brown scales ending in short rounded tips and coated on the back 

 with pale tomentum. 



The wood of Quercus Toitmeyi is light brown, with thick pale sapwood, and contains numerous 

 medullary rays and narrow bands of small open ducts marking the layers of annual growth. 



Quercus Toiimeyi inhabits the Mule Mountains in Cochise County in southeastern Arizona, where 

 it was found in July, 1894, by Professor J. W. Toumey,^ forming stunted open forests extending from 

 the belt of Quercus Emoryi to the summits. 



^ James WiUiam Toumey was born in Van Buren County, Michi- professor of botany and entomology in the University of Arizona, 



gan, April 17, 1865, and was graduated from the Michigan Agri- Professor Tourney has made large collections of Arizona plants 



cultural College in 1889, becoming a year later an assistant in the gathered in different parts of the territorj-, which he has explored 



botanical department of that institution. In 1891 he was appointed botanically more thoroughly than any one else. 



