FAGACEAE 
Stem erect, developing into tall shrubs or trees: 
nearly or quite uniform leaf-blades. 
uo iced mo Menu rugose-reticulate : 
plants with 
cup of the 
Leat-blades Noe as 1gose- -reticulate: cup of the acorn hemi- 
are of the acorn hemi phe c or funnelform: leaves 
er 
not succulent: nut yi 15 included at the basé. 
Leaf- blades various, entire, not 
Cup of acorn a da about as dee ep 
wide: nut ovoid or oval-ovoid, less qian 
twice as long as thi "M 
Cup of acorn deeper than wide, somewhat 
mune -form: nut ellipsoid, twice as long as 
ick 
Cup of acorn saucer-shaped, nut very slightly in- 
cluded at the base. 
LAURIFOLIAE 
Stems underground, the e erect, usually low. 
Stems erect, developing into tall shrubs or trees. 
Leaf-blades glabrous beneath. 
E nc ades obovate, the margins more or less revo- 
u 
Leaf-blades linear, elliptic, 
middle, the margins fla 
Leaf-blades broadened upward and 3-lobed near the 
or broadest above the 
Acorn. -cup hemispheric: nut less, than 1 cm. 
ed "cup saucer-shaped: nut 1 cm. long or 
more. 
eee linear or elliptic, or somewhat cuneate, 
n lobed at the apex. 
Acorn-ca hemispheric: leaves evergreen, flat 
AGO -cup saucer-shaped : leaves deciduo 
Lea la E narrow, linear to linear-elliptic, 
var to M d or oblanceolate, 
revolute in 
ud gel broad: elliptic to cuneate, flat 
Peer abe dent Pa th. 
eaf-blades gray- o beneath : 
shallow, saucer-shaped. 
Leaf-blades brown-tomentose beneath : acorn-cup deep, 
usually hemispheric 
-acorn-cup very 
IV. RUBR 
HER pis green and glabrous, or merely a tufts of hair 
n the vein-axils beneath. 
Acorn: UE saucer-shaped, flat or slightly rounded at the 
Gup with gray scales, small, mostly less than 1.5 cm. 
Leaf-lobes mostly toothed: acorn-cup flat at the 
Leaf-lobes mostly entire: acorn-cup slightly rounded 
ase. 
Cup with ee seales, large, mostly over 2 cm. wide. 
Larger lobes of the leaf about equalling the body 
of the blade: buds red-brown 
ME lobes of the leaf much longer than the 
of the blade: buds stramineous. 
POPE Cen Uline ONE hemispherie, more or less con- 
MTM closely appressed scales: buds glab- 
Leaf-lobes more or less dilated and lobed at the 
apex: buds stramineous. 
Leaf-lobes narrowed at the apex and coarsely 
toothed : buds red-brown. 
16. 
. Q. geminata. 
Q. virginiana. 
. Q. Chapmanii. 
Q. Rolfsii. 
19. Q. succulenta. 
. Q. pumila. 
Q. myrtifolia. 
23. Q. nigra. 
N 
31. 
32. 
33. 
34. 
9. 
30. 
. Q. laurifolia. 
. Q. Phellos. 
. Q. obtusa. 
. Q. cinerea. 
28. 
Q. imbricaria. 
Q. palustris. 
Q. georgiana. 
Q. maxima. . 
Q. Shumardii. 
Q. Schneckii. 
Q. borealis. 
. Q. microcarya. 
