FAGACEAE 

 Pin Oak 



Quercus palustris Muenchh. 



HABIT. A medium-sized tree 60-80 feet high and 1-3 feet 

 in diameter (max. 1 20 by 6 feet) ; pyramidal crown with drooping 

 lower branches which prune poorly. 



LEAVES. Deciduous; obovate; 3-6 inches long; deeply 5-7 

 lobed with wide, rounded sinuses; lobes toothed and bristle- 

 tipped; bright green and lustrous above, paler and glabrous 

 below. 



FRUIT. Maturing in 2 years; sessile or nearly so; acorn Yz 

 inch long, hemispherical, light brown; enclosed at base in thin 

 cup with red-brown, appressed, free-tipped scales; inner surface 

 of nut shell woolly; kernel bitter. 



TWIGS. Slender; red-brown. Winter buds: H inch long, 

 red-brown. 



BARK. Thick; gray-brown; long, smooth, finally scaly-ridged. 



WOOD. Important; similar to Q. borealis. 



SILVICAL CHARACTERS. Similar to Q. velutina; on moist 

 sites; a common ornamental; is easily transplanted. 



* * * 

 Northern Pin Oak 



Quercus ellipsoidalis E. J. Hill 



This species is similar to pin oak except for the ellipsoidal 

 acorn Vz-Va inch long which is enclosed for Vd-Vi its length 

 in bowl-shaped cup. From central Michigan and northern Ohio 

 to eastern Iowa and southern Minnesota. 



* * * 

 NuTTALL Oak 



Quercus nuttallii Palmer {Quercus palustris f. nuttallii Muller) 



This species is similar to pin oak except for its oblong-ovoid 

 acorn y^-lY^ inches long which is enclosed for about Yi its 

 length in a bowl-shaped cup and for the yellow axillary hairs 

 on the lower surface of the leaf. Bottomlands of the Mississippi, 

 Alabama, Tennessee, Missouri, Arkansas, Louisiana, Oklahoma, 

 and Texa« 



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