666 
DIOECIA DIANDRIA. 
flosculis. Corolla 3- 
partita. 
Foeminei. Spatha 2- 
fida, I-flora. Calyx 3- 
partitus, superus. Co- 
rolla, 3-petal a. Capsu- 
la 1-locularis, poly- 
sperm a. 
/ 
1. Americana. Mich. 
V. foliis linearibus, 
obtusis, 3-nervibus, ser- 
rulatis; pedunculis mas- 
culis brevissimis, foe- 
mineis spiralibus. 
Nutt. 
covered with florets. 
Corolla 3-parted. 
Fertile Jlorets. Spa- 
the 2-cleft, 1-flowered. 
Calyx 3-parted, supe- 
rior. Corolla 3-petal- 
led. Capsule l-celled, 
many seeded. 
Leaves linear, ob- 
tuse, 3-nerved, serru- 
late; peduncles of the 
sterile florets very 
short, of the fertile spi- 
ral. 
Mich. 2. p. 220. Sp. pi. 4. p. 651. Pursh, 2. p. 602. Nutt. 2. p. 230. 
An aquatic plant, floating or growing in stagnant or slow-flowing streams, 
heaves all radical. Scapes axillary. Female Jlowers generally furnished 
with a spiral filiform scape, so as to admit them to rise to the surface of the 
water when ready to expand. Scape of the sterile floret very short, always 
submersed; the flower itself, when mature, separates from the scape, rises to 
the surface of the water, expands and floats among the female florets until it 
decays. The female floret, after the period of inflorescence, sinks beneath 
the surface of the water and matures the fruit. Nutt. 
Grows from New-York to Florida. Nutt. This, like many of our aquatic 
plants, has escaped my notice. 
Flowers August — -October. Pursh. 
SALIX. Gen. Pl. 1493. 
Masculi. Amentum 
cylindraceum. Calyx 
squama. Corolla 0. 
Stamina 1 — 6, glandu- 
la baseos nectarifera. 
Sterile Jlorets. A- 
ment cylindrical. Ca- 
lyx a scale. Corolla 
0. Stamens 1 — 6, with 
a nectariferous gland 
at base. 
