MONOECIA TRIANDRIA. 
593 
sub 5-fidus. Stamina 
4—10. 
Foeminei. Calyx 
monophyllus, integerri- 
mus, scaber. Corolla 
0. Styli 2 — 5. Nux 
coriacea, calyce persis- 
tente basi cincta. 
slightly 5-cleft. Sta- 
mens 4 — 10. 
Fertile Jlorets. Ca- 
lyx one-leaved, very 
entire, scabrous. Co- 
rolla 0. Styles 2 — 5. 
Nut coriaceous, sur- 
rounded at base by the 
persistent calyx. 
* Fructificalio bien- 
nis; foliis plerumque se- 
tae eo-mucronatis. 
* Fructification bi- 
ennial; leaves generally 
mucronate. 
1. Phellos. Lin. 
Q. foliis deciduis, 
lineari-lanceolatis, u- 
trinque attenuatis, inte- 
mu- 
gernmis, 
cronatis; 
tunda. 
glabris. 
nuce subro- 
Leaves deciduous, 
linear-lanceolate, ta- 
pering at each end, en- 
tire, glabrous, mucro- 
nate; nut nearly round. 
Sp. pi. 4. p. 423. Walt. p. 234. Mich. 2. p. 197. Pursh, 2. p. 625. 
Nutt. 2. p. 214. 
Mich. arb. for. 2. p. 74. Mich. Quer. N. 7 to 12. (Q. Phellos Sylvatica.) 
A tree 30 — 60 feet high, erect, straight, generally slender for its height. 
Leaves linear-lanceolate, entire, very slightly mucronate, nearly sessile, gen- 
erally deciduous, when young of a very light green colour, resembling some- 
what those of the willow. Spikes of sterile florets near the termination of 
the last year’s wood. Fertile florets solitary in small clusters. Fruit (an 
acorn) nearly spherical, mucronate, small, sitting in a scaly cup. 
The leaves of the young plant have generally one tooth or angle, rarely 
more, on each side. 
Grows generally in swamps or along their margins; the timber is but little 
used. Willow oak. 
Flowers March and April. 
F 4 
VOL. II. 
