2975.
GLYCERIA fluitans.
Common Flote- Grass.
TR1ANDRIA Digynia.
Gen. Char. Spikelets of two or more florets. Glumes
unequal, falling short of the lowest floret. Outer
palea with five to seven strong prominent parallel
ribs and a scarious margin, subcylindrical, unarmed.
Styles terminal. Stigmas protruded from
the base of the floret. Nut oblong, convex on the
back, furrowed within, free.
Spec. Char. Panicle secund, slightly branched, very
long ; branches nearly simple, roughish. Spike-
lets linear, of 7-12, adpressed, lanceolate-oblong,
acute florets. Lower palese nearly three times as
long as broad. Sheaths compressed.
Syn. Glyceria fluitans. R. Br. Prod. FI. Nov. Holl.
179. Mert. et Koch, Deutschl. Flora, v. 1. 587.
Rumor. Agrost. Belg. 107. Fries, Nov. Mant. 2. 7.
Wahl. FI. Suec. v. 1. 60. Koch, Syn. FI. Germ,
ed. 2. 932. Gren. et Godr. FI. Fr. v. 3. 531.
Bab. Man. ed. 5. 403.
Festuca fluitans. Linn. Sp. PI. 111. Curt. FI. Bond,
v. 1. 18.
Poa fluitans. Scop. FI. Cam. ed. 2. v. 1. 72. Sm.
FI. Br.v. 1. 96. Koel. Gram. 204. Hook, et Am.
Br. FI. ed. 8. 548 (excl. var. /3).
Poa fluitans, v. subspicata. Pam. Brit. Grasses,
t. 95.
Gramen aquaticum cum longissima panicula. Bauh.
Hist. v. 2. 490. Ray, Syn. ed. 3. 412.
G. aquaticum fluitans multiplici spica. Bauh. Pin. 3.
T h e plant before us is closely allied to that figured with
the same name on our tab. 1520. We are indebted to the
acuteness of Fries for their distinction. As in all similar
cases, many botanists are not easily convinced that they are
more than varieties of one species; but we are strongly impressed
with the belief that they ought to be separated, although
a little more than usual care in the observer is requisite
for clearly understanding them. When seen in tolerably