196 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



somewhat paler beneath, oblanceolate, acute, commonly narrowed at base, 

 slender-petioled, with rather distant aristate teeth; acorn depressed, 20 to 25 

 mm. in diameter, two-thirds or more included, the urceolate, slightly umbonate 

 cup with thin blunt scales somewhat outcurved at marj^in. 



102. Quercus cortesii Liebni. Overs. Dunsk. Vid. Selsli. Forh. 1854: 175. 1854. 



Veracruz ; type locality, between Hacienda de Jovo and Huitamalco. 



Twigs slender, glabrous; buds small, straw-colored, glabrescent; leaves (de- 

 ciduous?) moderate (3 cm. wide, 12 cm. long), glabrous, or with axillary tufts 

 beneath, narrowly lanceolate, acute at both ends, moderately petioled, rather 

 distantly aristate-serrate ; fruit unknown. 



103. Quercus huitamalcana Trel. 



Quercus serra Liebni. Overs. Dausk. Vid. Selsk. Forh. 1854: 174. 1854. Not 

 Q. serra Unger, 1845. 



Veracruz and Puebla ; type locality, between Huitamalco and Teziutliln, alti- 

 tude 2,000 meters. 



Twigs rather slender, glabrate ; buds light brown, glabrescent, 2 mm. in 

 diameter, 3 to 4 mm. long; leaves (deciduous?) large (4 to 7 cm. wide, IG to 

 20 cm. long), glabrous and glossy, crisped, lanceolate, the base various, moder- 

 ately petioled, coarsely deltoid-serrate; fruit unknown. 



104. Quercus chiapasensis Trel. Proc. Amer. Phil. Soc. 54: 9. 1915. 

 Chiapas ; type locality, Finca Irlanda. 



Large evergreen tree with moderate glabrescent twigs and hairy buds ; leaves 

 large (4 to 8 cm. wide, 12 to 15 cm. long), glabrous, lanceolate, long-acute, the 

 base various, the petiole moderate or long, coarsely serrate or incised with aris- 

 tate teeth ; acorn broadly ovoid, 30 to 40 mm. in diameter, the large saucer- 

 shaped cup with thickened appressed scales. 



Polymorphic in foliage details. 



105. Quercus skinneri Benth. PI. Hartw. 90. 1842. 



Guatemala (tj'pe locality, in the mountains about Quezaltenango) ; possibly 

 also in Chiapas. 



Large (deciduous?) tree, similar to the preceding, but the equally long 

 round-based leaves ovate, with longer slender petiole, and fruit even larger. 



106. Quercus sartorii Liebm. Overs. Dansk. Vid. Selsk. Forh. 1854: 177. 1854. 

 Veracruz ; type locality, Totutla. 



Deciduous tree with rather slender glabrescent twigs and brown glab- 

 rescent buds 3 mm. in diameter and 6 mm. long; leaves moderate (3 to 5 cm. 

 wide, 9 to 13 cm. long), glabrescent, or with axillary tufts beneath, lance- 

 elliptic, acute, typically rounded at base, slender and often long-petioled, entire 

 with aristate veins or very low-serrate; fruit annual; acorn round-ovoid, 10 

 mm. in diameter, 12 nun. long, the sometimes turbinate cup with obtuse ap- 

 pressed scales. 



107. Quercus furfuracea Liebm. Overs. Dansk. Vid. Selsk. Forli. 1854: 189. 

 1854. 



Oaxaca ; type locality, Chinantla. 



Twigs rather slender, scurfy or glabrescent; buds small, light brown, glab- 

 rescent; leaves deciduous, moderate (3 to 5 cm. wide, 8 to 12 cm. long), gray- 

 stellale and tufted beneath, ovate to lanceolate, acute, mostly rounded at base, 

 moderately petioled, entire or aristately low-crenate-serrate ; acorn round-ovoid. 

 8 mm. in diameter, 10 mm. long, the somewhat turbinate deep cup with blunt 

 appressed scales. 



