[ 17 ] 
OVER-CUP WHITE OAK. 
Q.UERCÜS MACROCARPA. Q.folUs suhtomentosis, profuncle lyraiimque siniiato- 
lobat'is, obtusis ; fructu maximo ; cupulâ profundius craterata, superne cri- 
nîtâ ; glande turgide-ovatâ. 
This interesting species is most multiplied beyond, the Alleghanies, in 
the fertile districts of Kentucky and West Tennessee, and in Upper 
Louisiana near the Missouri.^ It is called by the Americans Bur Oak and 
Overcup White Oak, and by the French of Illinois, Chêne a gros gland. 
It is a beautiful tree, more than 60 feet in height, laden with dark 
tufted foliage. The leaves are larger than those of any other Oak in the 
United States, being frequently 15 inches long and 8 broad : they are 
notched near the summit, and deeply laciniated below. The acorns, 
which are also larger than those of any other American species, are oval, 
and enclosed for two-thirds of their length in a thick rugged cup, bordered 
with fine flexible filaments. Sometimes, however, in compact forests, or 
in very temperate seasons, the filaments do not appear, and the edge of 
the cup is smooth and bent inwards. 
The fructification of this tree is not abundant, and as its wood is infe- 
rior to that of the White Oak, it is little esteemed in the United States. 
I have observed, as well as my father who first made the remark, that 
the young branches are frequently covered with a yellowish fungous sub- 
stance, like those of the elm and sweet Gum. 
PLATE IV. 
A leaf of half the natural size. Fig. 1, An Acorn in the cup, of the natu- 
ral size. 
* [According to Pursh on dry slate or limestone hills.] 
3 
'•V 
