THE CENTRAL AMERICAN SPECIES OF QUERCUS 69 



C. H. Mull., Q. anglohondurensis C. H. Mull., Q. gracilior C. H. Mull., 

 and several Mexican species of which Q. acutifolia Nee is the type. 



The series Acutifoliae is the most nearly natural of all the groups 

 named under that category. It is difficult to characterize as its species 

 are superficially so diverse. In some species the characteristically 

 aristate-tipped teeth do not appear on typical plants but only on root 

 sprouts and similar variants. 



37. Quercus skinneri Benth., Gard. Chron. 1841: 16. 1841; PL 

 Hartw. 90. 1842. 



Quercus grandis Liebm., Overs. Danske Vidensk. Selsk. Forhandl. 



1854: 183. 1854. 

 Q. chiapasensis Trel., Proc. Amer. Philos. Soc. 54: 9. pi. 2. 1915. 

 Q. grandis var. tenuipes Trel., Mem. Nat. Acad. Sci. 20: 185. 



pi. 373. 1924. 

 Q. chiapasensis f. falcilobata Trel., Mem. Nat. Acad. Sci. 20: 186. 



pi. 375. 1924/ 

 Q. chiapasensis f. flagellata Trel., Mem. Nat. Acad. Sci. 20: 186. 



1924. 

 Q. chiapasensis f. cuneifolia Trel., Mem. Nat. Acad. Sci. 20: 186. 



1924. 

 Q. chiapasensis f. subcuneata Trel., Mem. Nat. Acad. Sci. 20: 186. 



1924. 

 Q. chiapasensis f. petiolata Trel., Mem. Nat. Acad. Sci. 20: 186. 



1924. 

 Q. chiapasensis f. longipes Trel., Mem. Nat. Acad. Sci. 20: 186. 



1924. 

 Q. salvadorensis Trel. in Standley, Field Mus. Bot. Ser. 8: 5. 



1930. 

 Q. hemipteroides C. H. Mull., Amer. Midi. Nat. 18: 853. 1937. 

 Q. trichodonta Trel. in Yuncker, Field Mus. Bot. Ser. 17: 358. 



1938. 



Small to very large tree. Twigs 2 to 4 mm. thick or occasionally 

 more slender, coarsely fluted, glabrous or from loosely fulvous-tomen- 

 tose becoming glabrate, dark reddish brown with few rather conspicu- 

 ous pale lenticels. Buds 4 to 7 mm. long, ovoid, obtuse, obscurely 

 angular and the scales often in vertical series, sparsely pubescent or 

 glabrate and light brown; the ligulate pubescent stipules 7 to 10 mm. 

 long, very early caducous. Leaves subevergreen or apparently de- 

 ciduous, thin and membranous, 8 to usually 12 or sometimes even 30 

 cm. long, 3 to usually 6 or even 12 cm. broad, broadly lanceolate or 

 obovate to lanceolate or oblanceolate, the apex tapered or acuminate, 

 base cuneate to rounded or cordulate, coarsely or finely and low- or 

 attenuate-toothed and the teeth long-aristate-tipped, or subentire 

 and the teeth replaced by aristae, the margins very finely cartilaginous 

 but scarcely revolute, crisped or flat, both surfaces glabrous and 

 rather lustrous or with inconspicuous tufts of hairs in the axils of the 

 veins and along the midrib beneath; veins about 10 to 15 on each side, 

 branching and obscurely anastomosing but obviously passing into the 

 teeth where these are present, slightly raised above, more prominent 

 beneath, the reticulum raised on both surfaces ; petioles 2 to 4 or even 

 5 cm. long, sometimes as short as 3 mm. and then the blade decurrent, 

 rather obviously winged distally in the longer ones or the full length 



