OAK FAMILY. ; 307 
is another species resembling the Pig-nut, PRige small thin-shelled nuts, 
the kernels of which are intensely bi bitter 
Orper LXVII. CUPULI’FERZ. (Oak Famity.) 
Trees or shrubs ag alternate ee penni-neryed | leaves, deciduous Pan and mon 
cious flowers ; on oe Bice indrical ( h), aeuise 
the prsti tila ed with an involucre which oe a kind of cup 
(cupule) to the Lcelled 7 soared indtebiaoent nut. co _— with 1-2 ovules in 
each cell ; all the cells and oyules but — disappearing in the fru: es ae tube pe rscanins 
to the ova ry, the minute whi carpe 9p crowning its summit. Seed without albumen, filled by 
the embryo, —the cotyledons thick a eshy 
* Fertile are scattered or nye an 
volucre 1-flowered, of many — seales omnis a cup around the 
In 
base el the hard, rounded nut 
1. QuERcus. 
Involuc  2~3-flow red, raphe ind on ickly bur, enclosing 1-3 nuts : 
2, CASTANEA. 
Invade vie dom’ marty oe containing 2 sharply tri- 
angular nuts. Sterile flowers in small head- like clusters. 3. Facus. 
et 2-flowered becoming a leafy cup, pr enlarged and 
cu rn at the apex, longer than the een 4. Coryrvs. 
ortile _— clustered i in a kind o' vy 
an open 3-lobed leaf, Zowered. Tish sees ovoid nut. 5, CARPINUS. 
Iganses a bladdery bag, 1-flow red, the whole catkin in fruit ap- 
pearing like a hop, Fruit saiiall ald eed-like. 6. OsTrya. 
1. QUER’CUS, L. Oax 
[The ancient classical name.] 
Srammnate Fx. Aments slender, Maar hee without bracts. Cae i 
6 ~ 8- (mostly 5- d. Stamens 5-12; anthers 2-celled. Pistriate © 
hae scattered or clustered. Involucre L Bowcrsl een of minute 
nig < 
m in 
and becoming woody or bark-like. Calyx adherent to the ovary,— 
limb 6-toothed. Ovary 3-celled ; ovules in pairs in the cells, per es 
pen mbranaceous, 
thick and lisey: ‘Mostly 1 pt with greenish | or yellowish he — 
pistillate ones quite incons; — ; all appearing in Mag, the fruit — 
anidepier in October, ite portion of our corns are 
enntal,—i. e., 2 years in coming to maturity. This pecaiaity serves 
to divide them into 2 sections which are subdivided into groups distin- 
guished by the outline of the leaves. 
a1. Fruit annual 6 se Sh in Saf bees afer lowering) ; - dusters mostly z 
peduncled : leaves 
* Warrs Oax Goon Lae lyst pial 
~ 
