SCARLET OAK: RED OAK 215 



var. sessiliflora has longer petioles, up to or more the 

 length of the midrib (30 mm.) ; the lamina more or less 

 pubescent beneath, at least in the axils of the veins, and 

 tapering below without forming auricles, while the lobes 

 tend to be more triangular and acute, and themselves 

 sometimes slightly cut. The var. pubescens, again, is a 

 form of the latter with more pronounced pubescence, or 

 even grey tomentum on the buds, shoots and leaves, the 

 latter being sometimes quite hoary beneath.] 



tt Lobes sharply angular, long-acuminate and 

 bristle-pointed, and irregularly sharply dent- 

 ate ; petioles rather long, slender. 

 Lobes so?newhat rectangular and ending 

 in irregular prolonged teeth ; sinuses deep 

 and rounded. 



Quercus coccinea, Wangenh. Scarlet Oak. Large tree, 

 with thin glabrous leaves, turning brilliant scarlet and 

 crimson in autumn. Leaves about 12 x 10 (6 22 x 5 

 13) cm., bright green, or somewhat yellowish green beneath ; 

 thin and herbaceous, not coriaceous, glabrous both sides, 

 broad oval, oblong, or more or less obovate, deeply pin- 

 natifid; lobes slender, spreading, and somewhat toothed, 

 each apex ending in a prolonged subulate filament. Young 

 leaves with tomentum in the angles of the veins. Petiole 

 about 3 6 cm. long. 



Venation very like Q. sessiliflora, but the strong 

 secondaries are sinuous; some run direct to the margin, 

 others form loops, alternately, and they may be slightly 

 more distant. Network loose, with large meshes. 



Lobes triangidar, and irregularly toothed; 

 sinuses less deep and more angular. 



Quercus rubra, L. Red Oak. Like Q. coccinea, the 

 leaves reddish in spring and turning orange to scarlet or 

 brownish and duller red in autumn, but less deeply cut 

 into more triangular acuminate lobes, with more angular 



