STANDLEY TEEES AND SHRUBS OF MEXICO. 197 



108. Quercus grahami ' Benth. PI. Hartw. 57. 1840. 

 Oaxaca ; type locality not recorded. 



Rather large deciduous tree with slender glabrous twigs and small, light 

 brown, glabrescent buds; leaves moderate (2 to 4 cm. wide, 7 to 12 cm. long), 

 glabrous, or sparsely scurfy and tufted in the axils beneath, very venulose, 

 lanceolate, rather taper-pointed, typically rounded at base, slender-petioled, 

 setaeeously serrate or incised ; acorn ovoid, 12 mm. in diameter, 15 to 20 mm. 

 long, half included, the rounded cup with blunt appressed scales. 



109. Quercus acutifolia N6e, Anal. Cienc. Nat. 3: 267. 1801. 



Type locality above the Rio Mescala. on the road from Acapulco to the City 

 of Mexico. 



Rather small evergreen tree with rather slender glabrate twigs and brown 

 glabrate buds 3 mm. in diameter and 6 mm. long; leaves large (5 to 7 era. 

 wide, 15 to 20 cm. long), glabrous, or the midrib puberulent above and the axils 

 tufted beneath, lance-ovate, acute or attenuate, the base mostly rounded, 

 rather long-petioled, aristately serrate or almost lobed, with rounded sinuses; 

 fruit unknown. " Aguatle." 



110. Quercus xalapensis Humb. & Bonpl. PI. Aequin. 2: 24. 1809. 

 Veracruz ; type locality, Jalapa. 



Rather large deciduous tree with moderate glabrate twigs and brown gla- 

 brate acute buds 2 to 3 mm. in diameter and 5 lum. long; leaves large (4 to 8 

 cm. wide, 10 to 15 cm. long), glabrous, or with some axillary tufts beneath, 

 broadly or ovately lanceolate, acute, typically acute at base or decuri*ent on the 

 slender petiole, setaeeously serrate with the margin little indented ; acorn 

 round-ovoid, 18 mm. in diameter, 20 mm. long, half included, the rounded cup 

 with blunt, rather loose scales. " Roble de duela," " encina roble " (Vex'acruz, 

 Ramirez). 



111. Quercus calophylla Cham. & Schlecht. Linnaea 5: 79. 1830. 

 Veracruz ; type locality, Jalapa. 



Large (deciduous?) tree with moderate fleecy or glabrate twigs and dull 

 brown glabrescent buds as much as 12 mm. long; leaves large (4 to 7 cm. wide, 

 11 to 13 cm. long)., densely creamy-tomentulose beneath, ovate to obovate or 

 elliptic, acute or acuminate, rounded or obliquely truncate at base, moderately 

 petioled, somewhat bristly-serrate at the end ; acorn ovoid, 18 mm. in diameter, 

 20 to 25 mm. long, one-third included, the half-round cup ^\^th blunt, rather 

 loose scales. 



With long-acuminate low-denticulate leaves as much as 12 cm. wide and 22 

 cm. long it is Q. acuminata Mart. & Gal. (Bull. Acad. Brux. 10^: 217. 1843). 

 With blunt-pointed, rather deeply serrate and acute-based leaves 5 cm. wide 

 and 13 cm. long, it is Q intermedia Mart. & Gal. (op. cit. 223. 1843). A form 

 with acute, sharply toothed leaves 5 cm. wide and 10 cm. long, or exceptionally 

 11 cm. wide and IS cm. long. Q. alamo Benth. (PI. Hartw. 55. 1842), is called 

 " alamo " because of its soft poplar-like wood. 



112. Quercus candicans N6e, Anal. Cienc. Nat. 3: 277. 1801. 

 Type locality, Tixtla, Guerrero. 



Moderate-sized deciduous tree with moderate, rather persistently tomentose 

 twigs and ovoid glabrate buds 3 mm. in diameter and 5 to 7 mm. long ; leaves 

 typically large (10 to 15 cm. wide, 15 to 25 cm. long), densely orearay-tomentu- 



* G. J. Graham collected a series of about 400 specimens of plants about the 

 City of Mexico, Tlalpuxahua, and Real del Monte. These were reported upon 

 by Bentham in his " Plantae Hartwegianae." 



