ADDITIONS TO THE OAKS. 
54 
Mr. Pursli has inserted this species from Willdenow, and believes it 
to be a variety of the Water Oak, Quercus aquatica. 
QuERcrs NANA. Q. foUis cuneiformis, glabris, apice trilobis, basi snbsinuatis, lobis 
divaricatis, mucronatis, intermedio majore ; capulâ scutellatâ. 
According to Mr. Parsh, this species is a low-growing shrub, distinct 
from the Water Oak, Quercus aquatica. 
Quercus discolor. Q. foliis oblongis, pinnatijido-sinuatis, subtus pubescenlibus, 
lobis oblongis, dentatis, setaceo-mucronatis ; cupula turbinatâ. 
This species of Mr. Pursh I consider as a variety of the Quercus iinctoria. 
OAKS found in New Spain by Messrs. Humboldt and Bonpland, and de- 
scribed in their Nova Genera et Species Plantarum. Paris, 1816. 
Quercus confbrtieolta. Q. ramulis abbreviatis ; foliis brevissime petiolatis, con- 
fertis, lanceolatis, acuminatis, mucronato-arislatis, mtegerrimis, coriaceis ; margine 
subrefexis, subtus pubescenlibus ; fructibus subgerninis, sessilibus. 
This tree is 10 or 12 feet in height : it is evergreen, grows in the tempe- 
rate and mountainous regions of New Spain, between Guanajuato and 
Santa Rosa, and fructifies in September. 
Quercus crassipes. Q. ramulis tuberculosis ; foliis br éviter petiolatis, lanceolato- 
oblongis, mucronatis, basi rotundatis, integerrimis, coriaceis, subtùs cmereo-tomento- 
sis ; fructibus pedunculatis subgerninis ; pedunculis incrassatis ; cupulis subturbinatis. 
This tree is about 20 feet high ; it is found on the low mountains of New 
Spain, near Santa Rosa, and fructifies in September and October. 
Quercus mexicana. Q. ramulis foliisque, subtus stellatim pubescenlibus, supra 
nitidis, lineari- oblongis, acutis, sub mucronatis, subcordatis, undulato-subsinuatis, 
subcoriaceis ; fructibus solitariis, breviter pedunculatis', cupulis cijatlii for mibus. 
This species rises from 15 to 20 feet : it is very abundant between Aca- 
pulco and the city of Mexico, near Mojonera, Quajiniquilapa and Chilpal- 
cino-o, and is also found near Moran, Regia, Guanajuato and Santa Rosa : 
it fructifies in September. 
Quercus lanceolata. Q. ramulis tuberculatis ; foliis oblong o-lanceolatis, utrinque 
acutis, undulato-repandis, coriaceis, supra nitidis, subtus stellatim pubescenlibus ; fruc- 
tibus subternis, brevissime pedunculatis ; cupulis cyalMformibus. 
This tree equals and sometimes exceeds, 20 feet in height; it abounds 
in the temperate regions of Mexico, between Moran and Santa Rosa : 
where it forms immense forests : it fructifies in September. 
Quercus tridens. Q. ramis lœvibus ; foliis oblongis, basi rotundatis, apice cuspi- 
dato-tridentatis,membranaceis, supra pubescenlibus, subtus tenuiter cinereo-tomentosis ; 
fructibus ternis aut quinis, breviter pedunculatis. 
This tree rises from 10 to 20 feet : it grows in the mountains near Moran 
in Mexico, and fructifies in May. 
Quercus laurina. Q. ramulis glabris, foliis oblongis, acuminatis, basi suhrotunda- 
tis ; apicem versus subdentatis, coriaceis, glabris, nitidis ; fructibus solitariis aut ter- 
ms, sessilibus; cupulis cyathiformibus. 
