THE CENTRAL AMERICAN SPECIES OF QUERCUS 75 



de San Ramon, January 9, 1930, Brenes 11602 (F); January 23, 1933, Brenes 

 16966 (F); Rio Jesus, between San Ramon and San Mateo, June 21, 1901, Brenes 

 14520 (US [2] lisotypes]). 



41. Quercus tenuiaristata Trel. in Yuncker, Field Mus. Bot. Ser. 17: 

 358. 1938. 



Small tree or shrub. Twigs 2 to 3 mm. thick, fluted, from densely 

 loose-fill vous-tomentose rather tardily glabrescent and the tomentum 

 graying, reddish brown with a gray bloom and few inconspicuous 

 lenticels the second or third season. Buds about 3 mm. long, nar- 

 rowly ovoid, obtuse, glabrescent except the fulvous-ciliate scales, 

 glossy brown; the broadly ligulate stipules about 10 mm. long, sparsely 

 villous, at length caducous. Leaves evergreen, 6 to usually 10 or 

 even 13 cm. long, 2 to usually 3 or even 5 cm. broad, lanceolate or 

 narrowly lanceolate, apex attenuately acute or acuminate, base 

 narrowly and unequally rounded to cordate, coarsely toothed or the 

 margin merely minutely long-aristate, both surfaces from densely 

 fulvous-tomentose soon glabrate and somewhat lustrous; veins about 

 12 to 16 on each side without intermediates, obscurely if at all branch- 

 ing and anastomosing, passing into the teeth, somewhat impressed 

 above and raised within the grooves, very prominent beneath, the 

 reticulum very slightly raised above and more prominently so be- 

 neath; petioles 3 to 7 mm. long, 1 to 2 mm. thick, from fulvous- 

 tomentose tardily glabrescent with the twigs. Catkins and fruit? 

 (See pi. 112.) 



Range: Central Honduras (about 1,400 m.). 



Quercus tenuiaristata is only questionably assigned to the series 

 Acutifoliae although it obviously does not belong to the series Tristes to 

 which Trelease originally assigned it with equal doubt. Its impressed 

 venation clearly distinguishes it from the other species of the series 

 Acutifoliae. 



Specimens examined: 



HONDURAS. — Dept. Comayagua: West of El Achote, above Siguatepequc, 

 Julv 28, 1936, Yuncker, Dawson, and Yousc 6204 (DeP, F [also photograph of tvpe 

 in 111], MBG, Mi [isotypes]). 



42. Quercus paxtalensis sp. no v. 16 



Probably medium-sized or large tree. Twigs 1 to 2 mm. thick, 

 fluted, glabrous, dark reddish brown with few small light lenticels, 

 becoming gray the second or third season. Buds about 2 mm. long, 

 rou nd-o void, glabrous and shiny, gray; the stipules caducous. Leaves 

 deciduous, thin but firm, 8 to 12 or rarely even 16 cm. long, 2 to 

 usually 3 or 4 cm. broad, lanceolate, apex attenuately tapered, base 

 cuneate or rounded but narrowly decurrent, coarsely toothed or merely 

 aristate, the teeth with long aristae, margins not revolute, somewhat 

 crisped, both surfaces glabrous and lustrous, the lower somewhat 

 cupreous; veins about 10 or 12 on each side with occasional intermedi- 

 ates, obscurely branching and anastomosing but passing into the 

 teeth, rather prominently raised on both surfaces (including the 

 reticulum) ; petioles 20 to usually 25 or even 30 mm. long, 0.5 to 1 mm. 

 thick, prominently winged distally, glabrous. Catkins? Styles with 



16 Quercus paxtalensis sp. nov. — Ramuli 1-2 mm. orassi glabri, gemmae 2 mm. longae rotundato-ovoideae 

 glabrae, folia decidua 8-16 cm. longa 2-4 cm. lata lanceolata attenuato-acuta basi cuneata vel rotundata 

 crasse aristato-dentata glabra nitida subtus cupreata, petioli 2-3 cm. longi 0.5-1 mm. crassi glabri, fructus 

 annuus brevipedunculatus, cupula 12-13 mm, lata 8-$ mm. alta, squamae arete appressae. 



