Utah Oak 



339 



58. HAIRY-LEAVED OAK Quercus submolUs Rydberg 



This is a shrub or smaU tree of the mountains of Arizona, Nevada and New 

 Mexico. 



The bark is hght gray and quite smooth. The twigs are hairy at first, becoming 

 much roughened by numerous lenticels, dark brown or gray and shining. The 

 buds are covered by thin, hght brown, hairy scales. The 

 leaves are narrowly obovate to oblong in outline, about 

 1 dm. long; the 5 to 9 lobes are usually entire, with a 

 rounded or pointed apex, the sinuses often extending 

 nearly to the midrib, narrow and rounded at the bot- 

 tom; the leaf base is broadly 

 wedge-shaped or truncate; they are 

 thick and firm, dark green, sparingly 

 hair}' or smooth, shining and with 

 conspicuous yellowish venation 

 above, yellowish green, downy, with 

 prominent venation beneath; petiole 

 8 to 20 mm. long. The hairy cat- 



kins are 3 to 5 cm. long; the pistil- 



FiG. 296. Hairy-leaved Oak. 



late flowers soHtary, sessile, the short 

 styles spreading. The fruit ripens the first season; nut oblong, 12 to 15 mm. long; 

 shell very thin, dark brown; cup depressed-hemispheric, about 15 mm. across, 

 embracing about one half the nut, covered with loose lanceolate, blunt, hair}', 

 rather thin, brown scales scarcely thickened on the back. 



This species, and the two following, have been confused with the shrubby 

 Quercus Gambelii Nuttall, which is not known to us to form a tree. Several 

 other related shrubs from the Rocky mountain region have been described as 

 species. 



'^" ^ 59. UTAH OAK 



Quercus utahensis (A. de Candolle) 

 Rydberg 



Quercus stcUaia utahensis A. de Candolle 



This small tree of the mountains 

 of Utah, Colorado, Arizona, arid New 

 Mexico attains a maximum height of 

 about 10 meters, although usually a 

 shrub. 



The bark is roughly furrowed. 

 The twigs are hairy at first, sparingly 

 roughened by lenticels, light brown becoming darker brown or dull gray. The 



Fig. 297. Utah Oak. 



