522 



FAGACEAE 



16. Quercus palmeri Engelm. Palmer's 

 Oak. Fig. 1267. 



Quercus palmeri Engelm. Trans. St. Louis, Acad. 3 : 



393. 1877. 

 Quercus dunnii Kell. Pacif. Rural Press. 17: 371. 



1879. 



A shrub or small tree, 3-5 m. high, with 

 short rigid branches and finely checked dark 

 grayish brown bark. Leaves evergreen 2-3 cm. 

 long, stiff coriaceous, elliptic to rounded, un- 

 dulate, spinose, dull green above, when young 

 densely white or yellowish tomentose becom- 

 ing nearly smooth but pale or whitish beneath ; 

 acorns maturing the second autumn ; cup shal- 

 low, subturbinate, 10-12 mm. broad, its walls 

 rather thin ; scales densely clothed with tomen- 

 tum ; nut ovoid, tomentose on the inner surface 

 of the shell. 



Chaparral covered mountains. Upper Sonoran 

 Zone; extending from the San Jacinto Mountains, 

 southern California, southward into northern Lower 

 California. Type locality: northern Lower California. 



15. Quercus chrysolepis Liebm. 

 Canon or Maul Oak. Fig. 1266. 



Quercus chrxsolepis Liebm. Dansk. Vidensk. 



Forhandl. "1854: 173. 1854. 

 Quercus fulvescens 1\.e\\. Proc. Calif. Acad. 1: 67. 



1855. 

 Quercus crassipocula Torr. Pacif. R. Rep. 4: 137. 



1857. 



A tree 10-20 m. high, with a trunk 0.5-2 

 m. in diameter or sometimes reduced to a 

 mere shrub ; young twigs hoary-tomentose ; 

 bark ashy gray and smooth, covered with 

 closely appressed gray-brown scales. Leaves 

 evergreen 1.5-6 cm. long, usually oblong- 

 ovate, entire or on vigorous shoots or young 

 trees often spiny-toothed, thick coriaceous, 

 becoming dark green above, grayish or yel- 

 lowish tomentose or ultimately becoming 

 glabrous and glaucous beneath ; acorns ma- 

 turing the second autumn ; cup shallow, with 

 usually very thick walls, silky within, its 

 scales mostly hidden by a dense coat^ of 

 rusty tomentum ; nut oval or oblong, 25-30 

 mm. long, nearly as broad, the shell with 

 scanty tomentum within. 



Caiions and moist mountain slopes. Upper 

 Sonoran and Transition Zones; southern Oregon 

 southward along the western slopes of the Sierra 

 Nevada and the Coast Ranges to San Pedro Martir 

 Mountain, Lower California, and also in the 

 mountains of Arizona, New Mexico and Sonora. 

 Type locality: California, locality not designated. 



17. Quercus vaccinifolia Kell. Huckle- 

 berry Oak. Fig. 1268. 



Quercus vaccinifolia KeW. Vroc. CaWi. Acad. 1: 96. 1855. 

 Quercus chrxsolepis vaccinifolia Engelm. Trans. St. Louis 

 Acad. 3: 393. 1877. 



Low spreading often prostrate shrub, with 

 slender flexible branchlets, simulating the habit of 

 the huckleberry. Leaves evergreen, about 15-25 

 mm. long, oblong-ovate, usually entire, pale shiny 

 green above, tomentose beneath; acorns maturing 

 the second year ; cup shallow, bowl-shaped, usually 

 pubescent, its walls thin; nut rounded-ovate, 10-15 

 mm. long. 



Dry subalpine ridges often forming thickets, Cana- 

 dian Zone; extending from the Siskiyou Mountains, 

 southern Oregon, to the Trinity Mountains and the 

 southern Sierra Nevada. Type locality : Trnuty, Scott 

 and Siskiyou Mountains. 



