POACEAE 
90 
Panicle open, the branches Eo spreading. 
Spikelets glabrous, about 2 mm. long: stems tufted, erect : 
rootstocks wanting 3. H. monandrus. 
Spikelets fies dulous: stems decumbent at base: root- 
. H. LAE 
Stocks presen 
Lower branches of panicle Sew at the node. 
e than one at the node. 5 H. oryzoides 
Lower branches of panicle 
. H. lenticularis (Miehx.) Kuntze. Stem about 100 em. tall, n rather 
dad Qu ern sheaths somewhat 2 SEM scabrous: blades very sca- 
bro —20 vide: panicle 10-20 
e few | nic spreading spike le i 
cae pos the ends. [L. lenticularis 
Miehx. ]—Ma arshes, mp and oe ees 
various provinces, Fla. to Tex., Minn., and 
S. C. 
H. uo ad. (L.) Kuntze. Stem slen- 
B 
n 
and root at the base, with slender scaly 
rootstocks: ee blade Ho erect, s 
not over 5 paniele mostly less 
than 10 em. dong, Ae ac spikelets 
about 5 mm. long, 1.5 mm. wide. [L. heg- 
andra ee ce Ser and ponds, 
I., Mez., 
3. H. monandrus (Sw.) Kuntze. Stem e oo i 50-100 em. 
tall: leaf- o erect, slender, 2-5 uh. ards the base: 
paniele 5—15 em. long, the capillary brane. Sp below: spikelets 
ide. [L monandra Sw.|—Rocky woods and a. ‘Goastal Plain, Fla. 
to E Tex.—(W. I., S. A.) 
4. H. umi wina.) Britton. Stem 50—100 em. long, erect from an often 
straggling or mbent base with densely imbricate- scaly rootstocks: leaf- 
blades n rather short, mostly ee 10 mm. wide: panicle 5-20 em. long: 
spikele 3-4 long, T 1.5 wide. [L. virginica Willd.]— ( WHITE- 
— Moist od. meadows, stream-banks and low pinelands, various pro- 
o Tex., Minn., and 
Stem 100—150 em. tall, with slender, d sealy 
f 
Fla. to Tex. and N. 
GRASS n 
vinces, Fla. 
H. nee (L.) Poll. 
blades very rough, ,5 m. 
ng, 1.5 Side. L. 
rootstocks: Tc En retrorsely scabrous: 
wide: d e 10—20 em. long: spikelets about 5 mm. lon m. 
oryzoides E — Marshes and wet places, often in zones be. E various 
|» provinces, PA o Tex., S Calif., Wash., and Newf.—(ZEurasia.) 
41. HYDROCHLOA Beauv. A slender branching monoecious aquatic, 
: staminate flowers in a small few-flow- 
in 
leaves float 
E M pen the 
ered terminal raceme: pistillate ee i g 
Pier ean racemes in the axils of the ; E 
es. Spikelets 1-flowere staminate #2 
spikelets with a thin 7-nerved a, 2- TX 
nerved palea, and 6 stamens, the glumes 1 Ei 
wanting: Be bl with a thin 8 
3-nerved s and 5-nerved lemma, 
the first Mii |n pM wanting, the stig- 
ng and slender. Mic) a only by 
s long and 
is following specie 
e H: e ba ES -blades 1-5 
em. long, 1-5 m inate spikelets 
5 mm. long: pistillate EE about 2-5 mm. long. 
[H. fluitans (Fl. SE. 
