64 
Bulletin of the University of Texas 
lobed (Chestnut Oaks). 
a. Acorns sessile. 
(1) Leaves obovate, small tree or 
SH TUD teeta ee pie Ree ee VEU Bes: 
(2) Leaves oblong to lanceolate, 
sometimes: ObOVate. 5226.8 56.3 25 
b. Acorns borne upon stalks about as 
long as the leaf petiole. 
Ch) ‘Leaves densely hairy below.... 
(2) Leaves smooth below........... 
3. Leaves entire, undulate, or lobed only 
near apex. 
a. Cup saucer-shaped, thin, leaves hairy 
DEReCAEn 4. LOR SiN Be ee eee See eS 
b. Cup saucer-shaped, leaves smooth, 
CUP ENA K othe oe ee oe he ee ee 
Leaves persistent until the appearance of 
the new leaves of the following year, 
mostly evergreen. 
.1. Leaves entire on mature branches, 
sometimes serrate on young twigs, 
dark green, southeastern species...... 
2. Leaves spinulate toothed to entire, dark 
green, western species................ 
3. Leaves sinuate lobed not toothed...... 
4. Leaves light or blue green, hairy be- 
neath when old, entire wavy or lobed. . 
5. Leaves light or blue green, smooth be- 
neath when old, entire wavy or lobed... 
II. Leaves or their lobes mostly tipped with 
A. 
B. 
bristles, fruit maturing the second season. . 
Leaves persistent; densely white, downy 
Denes th atic were = oietika.< ch ie ees ae 
Leaves deciduous. 
1. Leaves deeply cut or lobed. 
a. Leaves lobed to about the middle, 
lobes wedge shaped; cup of acorn, 
saucer shaped, thick, about %-inch 
DEOAA Hos ow ks icy GRR ie eo ane 
b. Leaves lobed to beyond the middle 
or sometimes a few of them not as 
deeply lobed. 
dQ. 
10 
11 
12 
13 
14 
15 
16 
(1) Cup of acorn saucer shaped, thin, — 
enclosing the nut for about 1/3 
its length; leaves dull above, 
cup about 54” -broge,. 28.5). Soe 
fae 2 Ae ean Ce 
prinoides. 
. Muhlenbergii. 
. Michauxii. 
. bray. 
. Durandii. 
. Laceyi. 
. Virgiana. 
. Emoryi. 
. breviloba. 
. undulata. 
. oblongifolia. 
Black Oaks. 
. hypolerica. 
. rubra. 
. Sehneckii. 
