THE CENTRAL AMERICAN SPECIES OF QUERCUS 77 



Specimens examined: 



BRITISH HONDURAS.— Guatemala-British Honduras Boundary Survey, 

 camp 36, May 22, 1934, Schivp 1249 (AA, F, MBG, Mi, NY). El Cayo Dis- 

 trict: along Rio Frio, San Agustin, Mountain Pine Ridge, July-August 1936, 

 Lundell 6615 (F, MBG, Mi [type], NY, US, USNA). 



44. Quercus gracilior sp. nov. 18 



Large tree. Twigs 1 to 1.5 mm. thick, fluted, from loosely tomen- 

 tose becoming glabrate and dark reddish brown with small light 

 lenticels. Buds about 3 mm. long, ovoid, acute, glabrous and lustrous 

 light brown; the narrowly ligulate stipules 5 to 10 mm. long, persistent 

 for a time. Leaves deciduous, thin and membranous, 6 to usually 10 

 or 12 cm. long, 1 to usually 2 or 3 cm. broad, linear-lanceolate or 

 oblanceolate, attenuately acute at both ends, entire except for several 

 low aristate-tipped teeth near the apex, margins very minutely 

 revolute and slightly crisped, glabrous and somewhat shining on both 

 surfaces; veins about 15 on each side with rather strong intermediates, 

 repeatedly branching and rather obviously anastomosing, rather 

 prominent on both surfaces (including the very fine reticulum), the 

 principal ones more strongly raised below; petioles 1 to 3 mm. long, 

 prominently winged, glabrate. Staminate catkins? Pistillate catkins 

 subsessile, 1- or 2-flowered, the elongate styles with very abruptly 

 dilated stigmas. Fruit annual, solitary or paired, subsessiJe; the 

 young cups not constricted at the base, scales ovate, apex rounded, 

 very closely appressed, fulvous-puberulent but the brown margins 

 glabrate; mature cups and acorns not seen. (See pi. 116.) 



Range: Central Honduras (about 1,200 m.). 



The short petioles and narrow leaves attenuately acute at both ends 

 and numerous branching veins set this species off from all others in 

 the series Acutifoliae. 



Specimens examined: 



HONDURAS. — Dept. Comayagua: Coyocutena, San Luis, May 24, 1932, 

 Edwards 285 (AA [type], F). 



Series Crispipiles Trel., Mem. Nat. Acad. Sci. 20: 183. 1924. 



Medium-sized or large tree; twigs slender or moderate, glabrate or 

 tomentose; buds ovoid to fusiform, pubescent or glabrate, stipules 

 caducous; leaves evergreen or apparently deciduous, thick or thin but 

 firm, medium-sized, oblong to obovate or lanceolate, rounded to acu- 

 minate at apex, rounded to subcordate at base, entire or coarsely 

 toothed, persistently crisp ed-stellate- tomentose beneath or rarely 

 nearly glabrate; petioles moderately long; fruit biennial, short-pedun- 

 culate, solitary or several, cups hemispheric or turbinate, the margins 

 finely or coarsely inrolled, acorns one-half or more included. 



Range: Guatemala and Chiapas, Mexico. 



Includes: Q. crispipilis Trel. (type). 



45. Quercus crispipilis Trel., Mem. Nat. Acad. Sci. 20: 184. pi. 370. 



1924. 



Quercus cerifera Trel., Mem. Nat. Acad. Sci. 20: 184. pi. 370. 

 1924. 



i ? Quercus gracilior sp. nov.— Arbor grandis, ramuli 1-1.5 mm. crassi glabrati; gemmae 3 mm. longae 

 ovoideae glabratae, stipulae 5-10 mm. longae anguste ligulatae interdum persistentes, folia decidua 6-12 cm. 

 longa 1-3 cm. lata linearilanceolata utrinque attenuato-acuta prope apicem aristato-dentata alibi integra, 

 venis utrinque 15 anastomosantibus, petioli 1-3 mm. longi alati, fructus annuus. 



323472°— 42 6 



