60 MISC. PUBLICATION 477, U. S. DEPT. OF AGRICULTURE 



Series Crispifoliae Trel., Mem. Nat. Acad. Sci. 20: 146. 1924. 



Series Pachyphyllae Trel., Mem. Nat. Acad. Sci. 20: 147. 1924. 



Medium-sized or large trees; twigs from fulvous-stellate glabrate; 

 buds oblong-fusiform, the scales fulvous-cilia te ; leaves deciduous (?) 

 to obviously evergreen, rather large, oblanceolate to linear-lanceolate, 

 long-acuminate, glabrous except the base of the midrib, veins much 

 branched and anastomosing, raised on both surfaces; petioles 5 to 

 rarely 10 mm. long; fruit biennial (?), large, cups and attachment 

 unknown, acorns ovoid, 25 to 30 mm. long, included at the base only. 



Range: Southern Guatemala and adjacent Chiapas and El Salvador. 



Includes: Q. crispifolia Trel. (type). 



The relationship of this series is discussed under the following 

 species. 



32. Quercus crispifolia Trel., Mem. Nat. Acad. Sci. 20: 147. pi. 286. 

 1924. 



Quercus amphioxys Trel., Mem. Nat. Acad. Sci. 20: 141. pi. 268. 



1924. 

 Q. incrassata Trel., Mem. Nat. Acad. Sci. 20: 147. pi. 287. 



1924. 



Medium-sized or large tree. Twigs 1 to 2 or 3 mm. thick, fluted, 

 from loosely fulvous-stellate-tomentose promptly or tardily glabrate 

 and grayish or reddish brown with prominent or inconspicuous lenti- 

 cels. Buds 5 or 6 mm. long, oblong-fusiform, acute, light brown and 

 glabrous except for the moderately fulvous-ciliate scales; the stipules 

 promptly caducous, 5 mm. long, ligulate, tomentose. Leaves decidu- 

 ous (?) or obviously evergreen, thin but hard and coriaceous or rather 

 thick, 10 to usually 15 or 20 or rarely 25 cm. long, 3 to usually 5 or 

 even 7.5 cm. broad, oblanceolate to linear-lanceolate, the apex acumi- 

 nate to attenuately narrowed or flagellate, inconspicuously arista te- 

 tipped, the base attenuately narrowed and decurrent on the petiole to 

 merely cuneate or narrowly rounded, rarely cordate, entire, margins 

 minutely revolute, finely crisped, upper surface somewhat shining, 

 glabrous or fulvous-stellate-pubescent at the base of the midrib, lower 

 surface similar, usually somewhat more prominently stellate-pubescent 

 along the base of the midrib; veins about 15 to 20 on each side with 

 occasional evanescent intermediates, repeatedly branched and clearly 

 but rather inconspicuously anastomosing near the margin, slightly 

 impressed above but raised within the grooves, rather prominent 

 beneath, the rather fine reticulum slightly raised on both surfaces; 

 petioles 5 to rarely 10 mm. long, 1.5 to 2.5 mm. thick at the swollen 

 dark-red base, from loosely fulvous-tomentose glabrate. Catkins? 

 Fruit biennial (?) ; cups and attachment unknown; acorns rather large, 

 broadly ovoid, 25 to 30 mm. long, 22 to 26 mm. broad, from minutely 

 silky-puberulent glabrate and brown, included at the base onlv. (See 

 pis. 81 to 84.) 



Range: Wet mountains of southwestern and southeastern Guate- 

 mala and adjacent Chiapas, Mexico (1,500 to 2,700 m.), and probablv 

 El Salvador. 



Quercus crispifolia differs from the other entire-leaved species of 

 Erythrobalanus in its very short petioles, elongate buds, and very 

 large fruit. Some of the other species have one or another of these 

 characters but are then clearly excluded by the others. In none is 



