Bailey &. Bailey: Woody Plants of National Parks 63 



Leaves mostly spine-toothed; occurs in parks of the Southwest 



4. Q. dumosa. 



Leaves green above and below, not grayish- or yellowish-fuzzy below. 



Leaves toothed, the margins not crisped, the teeth not spine-tipped 



5. Q. undulata. 



Leaves spine-toothed or not toothed. 



Leaf-margms strongly crisped, spine-toothed; occurs in parks m the 



Southwest 5a. Var. pungens. 



Leaf-margms scarcely if at all crisped, spine-toothed or not toothed; 



occurs in Sequoia National Park 6. Q. IVisUzenl var. 



L Gambel Oak (Quercus Gatnbelt Nutt.), fig. 18. — Usually a tall 

 many -stemmed shrub 10 to 20 feet high, the young twigs fuzzy, light brown; 

 leaves about 3 to 5 inches long, 1 to 3 inches wide, tapering towards the base, 

 rounded at the tips, deeply divided into several more or less rounded lobes, 

 shiny green above, duller below, at first often finely hairy, later becoming 

 smooth; acorns egg-shaped to oblong, more or less pointed at the tips, about 

 1/2 inch long, % to % inch wide, light brown to nearly black; cup hemispheric 

 or somewhat top-shaped, covering 1/3 to 14 of the acorn, the scales rounded 

 and somewhat thickened on the backs, mostly united at the base, the tips 

 free, pointed. (Syn. Q. Gnnnisoni Rydb.) 



Fig. 18. Gambel oak {Clucrcus Cambeli). 



