422 FAGACEAE 
Fruit m E the first year: nut-shell glabrous within: seeds with the abortive 
PA e s at the base: leaf- blades with blünt, or merely acute or mucronate teeth 
0 
Leay es acinus: blades toothed or lobed :—-White-oaks. 
— MEI blades entire, M sometimes on Shoots 
n Q. nima :—Li ve-oaks. 
Fruit "maturing "e second year: nut-shell pubescent within: 
seed with the abortive ovules at or near the apex: leaf- 
blades. with e tipped lobes or teeth. 
Leaf-bla des E for undulately lobed > young shoots) or 
in Nos. ands 23 with a more or less lobed ee dila- 
tion: Oe n-nut of a globose type, small :—Laurel-oaks. 
Leaf-blades prominently 1 lobed, except Sane des in Q: mare 
landica and Q. arkansana: acorn-nut of an ovoid type: 
ALBAE 
Leaf-blades lyrate or sinuate-pinnatifid. 
Le ae ies glabrous beneath: acorn- cup with tubercled 
es 
Leaf-blades Du beneath or ‘sometimes glabrous in 
m ~ a: acorn-cup with flat or slightly thickened 
Leaf-blades with truncate or emarginate 
T P acorn-cup mostly over 15 
e more than half protrud- 
n. o "te cup. 
in blades with rounded o lobes: 
; corn-cup mostly less than 15 mm. wide: 
. nut less than half protruding from the 
Leaf-blades cuneate in outline, brown or yel- 
n a eath, the 3-7 lobes low and 
un 
Aom. peduncled : nut depressed, nearly or quite 
included in the loose cals cup 
us Scales of nc D awn- oped. thus forming a 
nge around t 
Leaf blades undulate, sinuateloped, or coarsely toothed. 
eaf-blades coarsely too 
Acorns manifestly peduncled, the peduncle shorter or 
longer than the petio 
Peduncles much longer pm the petioles: upper 
scales of the o mostly awn-tipped, sometimes 
forming a frin 
Peduncles about E “lon ng as the petioles or shorter: 
upper scales of the cup not 1 npe con- 
Acorn less than 2 eo ong: cup 1.5 
or obtuse 
A ies sessile: leaf blades typically of an obovate 
e, with few teeth: rub or small tree. 
ed, a ntir 
ue bla des glabrous, 'at least when fully grown, pm 
neat acorn-cup a sa ae sometimes slightly 
pere at the 
cta: eet BR S  oubesrent and white beneath: 
RET cup very shallow, saucer-shaped or almost 
like. 
VIRGINIANAE 
Stem (rootstocks) underground, the branches erect, low: 
plants with narrow and broad leaf-blades, the broad ones 
prominently sinuate or pinnately lobed. 
e 
9o 
© 
e 
I. ALBAE. 
II. 
III. 
VIRGINIANAE. 
LAURIFOLIAE. 
IV. RUBRAE. 
© 
S 
13. Q. 
14. Q. 
Q. 
. alba. 
. Stellata. 
. Margaretta. 
. Boyntonii. 
lyrata. 
. macrocarpa. 
bicolor. 
. Prinus. 
. AMuhlenbergii. 
. montana. 
. prinoides. 
austrina. 
Durandi. 
minima. 
