STANDLEY TREES AND SHRUBS OF MEXICO. 187 



very short petiole somewhat tomentose; acoru round-ovoid, scarcely 10 mm. 

 in diameter, fully half included, the rounded cup with somewhat thickened 

 and blunt appressed scales. 



50. Quercus toumeyi Sarg. Gard. & For. 8: 92. 1895. 

 Sonora. Arizona ; type locality, Bisbee. 



Shrub or small tree with slender tomentulose twigs and small pubescent buds ; 

 leaves deciduous, very small (scarcely 1 cm. wide and 2 cm. long), smooth or 

 papillate above, sparingly velvety beneath, elliptic, mucronately acute, sub- 

 cordate, entire or pungently few-toothed above, with very short hairy petiole; 

 acorn oblong, scarcely 8 mm. in diameter and 12 mm. long, less than half 

 included, the rounded cup with rather blunt appressed scales ; wood hard, close- 

 grained, brown. 



51. Quercus dumosa Nutt. N. Amer. Sylv. 1: 7. 1842. 



California ; type locality, Santa Barbara. Extending into Baja California, 

 in several foliage forms, of which one, with very small, ovate-elliptic, pun- 

 gently dentate leaves scarcely 15 nun. wide and 25 mm. long, is var. turbinella 

 Jepson (Silva Calif. 218. 1910; Q. tarMnella Greene in Greene & Kellogg, 111. 

 West. Amer. Oaks 37. 1889). 



Deciduous shrub with slender, usually glabrescent twigs; leaves small (com- 

 monly less than 2 cm. wide and 5 cm. long), polymorphous, more or less per- 

 sistently tomentulose beneath, short-petioled ; fruit typically slender-peduncled, 

 the moderate-sized or small oblong acorn scarcely half included in the finely 

 scaly, half-round cup. 



This species is said to be the one whose acorns were most used as food by 

 the Indians of southern California. 



52. Quercus breviloba (Torr.) Sarg. Gard. & For. 8: 93. 1895. 



Quercus ohtusifolia ltrevilol)a Torr. U. S. & Mex. Bound. Bot. 266. 1859. 



Quercus annulata Buckl. Proc. Acad. Phila. 1860: 445. 1860. Not Q. an- 

 nuhita Smith, 1819. 



Nuevo Leon. Texas ; type locality in Howard County. 



Large deciduous shrub or small tree with rather slender glabrous buff twigs ; 

 leaves rather small (3 to 6 cm. wide, 6 to 12 cm. long), glabrous and glossy 

 green above, glabrate but pale or microscopically silvery-tomentulose beneath, 

 elliptic-obovate, obtuse, mostly acute at base, short-petioled, usually undulate 

 or with a few short round lobes ; acorn ovoid, scarcely 8 mm. in diameter and 

 12 mm. long, half included, the rounded cup with acute, rather close scales ; 

 wood hard and strong, brittle, brown, close-grained. 



53. Quercus oleoides Cham. & Schlecht. Linnaea 5: 79. 1830. 



Veracruz, Chiapas, and Tabasco ; type locality, Hacienda de la Laguna, near 

 Jalapa, Veracruz. British Honduras, Guatemala, Honduras, and Costa Rica. 



Rather large broad-topped evergreen tree with slender gray-tomentulose 

 twigs and small reddish glabrate buds; leaves mostly rather small (3 to 6 

 cm. wide, 6 to 8 cm. long, but exceptionally twice as large), glabrous and 

 green above, minutely pale-tomentulose beneath, revolute, obovate-elliptic, 

 rather obtuse, subcuneate, rather short-petioled, typically entire ; fruit mostly 

 peduncled ; acorn ovoid, 10 mm. in diameter, 15 to 20 mm. long, about half 

 included, the turbinate cup with keeled acute appressed scales in vertical 

 rows. " Roblecito " (Guatemala, Honduras). 



A juvenile form with obovate toothed leaves is Q. lutescens Mart. & Gal. Bull. 

 Acad. Brux. 10 '': 219. 1843. 



54. Quercus fusiformis Small, Bull. Torrey Club 28: 357. 1901. 

 Quercus virginiuna fusiformis Sarg. Bot. Gaz. 65:448.1918. 

 Coahuila and Nuevo Le6n. Texas ; type locality, Kerrville. 



