WEST AMEI^ICAN OAKS. 







BLACK OAK SERIES. 



Bark dark, almost black; wood reddish, coarse-grained; leaves of a dark glossy green, never 



pale or glaticotis; their lobes, in the deciduous species, taper-pointed; 



abortive ovules borne at the top of the seed. 



* Deciduous Species. 



Plate I. 



QUERCUS KELLOGGII, Newberry. 



Bibliography. 



QuERCUS RUBRA, Liebmaiin, in Benth. PI. Hartw. 337 (1849), ^^^ of Linn. 

 QuERCus TINCTORIA Californica, Torrey, in Pacif. R. Rep. iv, 138 (1856). 

 QuERCUS Californica, Cooper, in Smithsonian Rep. (1858) 261. 

 QuERCUS Kelloggii, Newb., Pacif. R. Rep. vi, 28, fig. 6 (1857). 



, Engelmann, in Bot. Calif, ii, 99 (1880). 



, Kellogg, Forest Trees of Calif. 69 (1882). 



, Sargent, U. S. Forestry Rep. 149 (1884). 



, Behr, Fl. San Francisco, 270 (1888.). 



QuERCUS SoNOMENSiS, Benthani, in A. De Candolle, Prodr. xvi', 62 (1864). 



, Bolander, Proc. Calif. Acad, iii, 230 (1866); Catal. PI. S. F. 27 (1870). 



, Engelm., Trans. St.Louis Acad. iii. 388 (1876); Wheeler's Rep.374 (1878). 



Description. Tree from forty to eighty feet high ; trunk from two to five feet in 

 diameter, clothed with a rough, dark-colored bark ; branches coarse, stout, spreading or 

 ascending, forming a rounded or elongated head, in age broadest at top ; leaves from four 

 to seven inches long, and from two to four in breadth, often widest above midway, pin- 

 nately and deeply sinuate-lobed ; the lobes entire or coarsely toothed and slender-pointed ; 

 acorns maturing the second season, mostly short-stalked, growing singly, or two or three 



