520 
MONOECIA TRIANDIUA. 
MO NOE CIA TR1ANDRIA. 
TYPHA. Gen. Pe. 1401. 
Masculi — Amentum 
cylindricum. Calyx 
obsoletus, triphyllus. 
Corolla 0. 
Foeminei — Amen- 
tum cylindricum, infra 
masculos. Calyx 0. 
Corolla 0. Semen 1, 
pedicellatum; pedicello 
basi pilis longis pappi 
instar cincto. 
1. Latifolia. 
T. foliis linearibus, 
planis; spica mascula 
femineaque approxi- 
mates, utraque cylin- 
drica. 
Male Florets — Ament 
cylindrical. Calyx 
obsolete, three-leaved. 
Corolla 0. 
Female — Ament cy- 
lindrical, below the 
male. Calyx 0. Co- 
rolla 0. Seed 1, pedi- 
cellate; the pedicel 
surrounded at base by 
long hairs resembling 
a pappus. 
Leaves linear, flat; 
male and female spike 
approximate, both cy- 
lindrical. 
Sp. pi. 4. p. 197. Walt. p. 227. Pursh, 1. p. 34. Nutt. 2. p. 202. 
Root fibrous, perennial. Culm sbout six feet high, terete, glabrous. 
Leaves as tall as the stem, nearly an inch wide, strap-shaped, glabrous, 
acute, sheathing the stem at base. Flowers in long cylindrical masses near 
the summit of the culm, the upper cylinder staminiferous. Calyx composed 
of three? very minute scales. Stamens three, the filaments united? at base. 
Anthers oblong, furrowed. Fertile Jlorets beneath, the cylinder separated 
by a small interval from that bearing sterile florets. Germ small. Style 
