State Board of Forestry. 173 



Terminal scales of the cup awncd, forming a fringe 



around the cup, rarely wanting 4 Q. macroecarpa. 



*Leaves with sharp or rounded teeth, sometimes 

 somewhat lobed in No. 5. 

 Fruit peduncled. 



Peduncles exceeding the petioles 5 Q. bicolor. 



Peduncles equaling or shorter than the petioles. 



Bark flaky v . . 6 Q. Michauxii. 



Bark close and furrowed 7 Q. Prinus. 



Fruit sessile or on very short peduncles 8 Q. Muhlenbergii. 



Bark dark, furrowed; leaves with bristle tips; fruit ma- 

 turing the second year. 

 **Leaves more or less deeply lobed, the lobes or teeth 

 conspicously bristle pointed. 

 Mature leaves green and smooth beneath, except tufts 

 of hairs in the axils, somewhat regularly lobed. 

 Leaves lobed to about the middle, lobes wedge- 

 shaped, broadest at the base; cup saucer-shaped; 



nut about 2 cm. (^ inch) broad 9 Q. rubra. 



Leaves lobed to beyond the middle, rarely a few not 

 so deeply lobed, at least some of the lobes broad- 

 est at the apex. 

 Cup saucer-shaped, rarely enclosing the nut for 

 more than 1/3 its length. 

 Leaves glossy above; cup about 1-1.5 cm. (about 



^ inch) broad 10 Q. palustris. 



Leaves dull above; cup 1.5-2.5 cm. (about ^4 



inch) broad 11 Q. Schneckii. 



Cup hemispheric or top-shaped, generally enclos- 

 ing the nut for 3^ its length. 

 Inner bark gray or reddish, scales of the cup 

 closely appressed. 

 Cup brown, scales at maturity glabrous, 



glossy, acute, kernel white 12. Q. coccinea. 



Cup ashy, scales not glossy, hairy, blunt; 



kernel yellow 13. Q. ellipsoidalis. 



Inner bark orange, scales at the top of the cup 



loose 14 Q. velutina. 



Mature leaves with a gray or rusty pubescence be- 

 neath, generally irregularly lobed 15. Q. falcata. 



**Leaves entire or with few teeth, or 3-5 lobed above 

 the middle. 



Leaves entire, oblong, pointed at both ends 16 Q. imbricaria. 



Leaves obovate, 3-5 lobed above the middle, lobes 



rounded 17 Q. marylandica. 



1. Quercus alba Linnaeus. White Oak. Plate 43. Bark usually 

 light gray, sometimes a very dark gray, not deeply fissured," flaky, 

 especially on the upper part of the trunk and larger branches,^some- 

 times the lower part of the trunk is more deeply fissured with the 



