18 CY)? CEACEAE 
14. P. diversifolius Raf. Leaves of 2 kinds, the sr ed linear-setaceous, 
is b seh es ea oval, or elliptic-lanceolate, 1-2.5 em. long: drupelet 
tim ong, t middle We up d) [P. hybr idus Michx .]—Ponds 
bo sin ees various provinees, Fla. ex., Calif., 2 Me.—(W. I., Mez.) 
2 P. pectinatus L. Leaves of 1 kind, all submerged, setaceous or filifor 
—15 em. long: drupelet 1.5 mm. long, crestless ——Stüll water or streams, various 
es Fla. to Tex., Calif., B. C. and Que.—(W. I., O. W.) 
Famity 2. ZOSTERACEAE — Ezr-GRASS FAMILY 
Marine herbs. Leaves alternate: blades narrow, the base inflated. 
Flowers monoecious, alternating on a flat spadix; staminate a pem 
anther; durus E 2 with a style e two capillary sti 
in eoastal region 
1. ZOSTERA L. Plants cae e or 
floating. Leaf-blades elonga pathe 
thin-edged.—About 8 species in both the 
Old World and the New 
x i pes L. Leaf- rur linear, 3. Dog 
vide: spadix 5-6.5 em. lon 
seed Souk 20- ribbed ene WRACK. EEL. 
RASS.)—Streams, bays, and ditches along 
the coast, Fla. to Newf.; also on Pacif. 
—(0. W.) i ] 
25d 
rt 
XS - 
SAVE’ 
IMMER 
(eA 
i 
= 
Cary 
“SSS 
estar minor has been repor 
region, but imperfect material of the next 
following species has been mistaken for it. 
Famity 3. CYMODOCEACEAE — MANATEE-GRASS FAMILY 
Submerged herbs with jointed rootstocks. Leaves clustered at the 
nodes or on n short branches each with a sheath and a narrow blade. Flowers 
noecious or dioecious. Perianth wanting. Androecium a pair of anthers 
terminating a long stalk. Gynoecium of 2 united carpels, terminating in a 
style an elongate stigmas, or of 1 earpel. Fruit an oblique nutlet.— 
Comprises 2 genera and 10 species, Pd. distributed. 
Anthers equally attached to the stalk: stigmas 2: leaf-blade 
terete or nearly so 1. CYMODOCEA. 
Anthers unequally attached to the stalk: stigma 1: leaf-blade 
flat. 2. HALODULE. 
1. CYMODOCEA Koenig.  Rootstock 
elongate. Leaves terete or half- ‘terete above 
the sheaths. Flowers hidden e leaf- 
sheaths, or the staminate ecc 
Seven or eight species, in tropical regions. 
1. C. manatorum Aschers. Plant growing 
on sandy bottoms, the short stems arising 
from the nodes of ‘the rootstock: leaf-blades 
m linear, 5-25 em. long: nutlet 6-7 
long, r ; i 
Seldom seen unless dredged up c or blown ashore during storms. 
