Quercus pacayana sp. nov. C.H. Muller 1942

Arbor grandis, ramuli 1.5-3 mm. crassi glabrati, gemmae 3 mm. longae rotundo-ovoideae glabrae,
folia decidua 4-8 cm. Ionga 2-3.5 cm. lata coriacea elliptica vel anguste obovata apice rotundata
basi cordulata vel rotundata subintegra vel crenata glabrata, costa strigosa vel fulvo-tomentosa
excepta, venis utrinque 10-12 subtus prominentibus, petioli 4-12 mm,longi glabrati.