628 
Plants of the Punjab, 
WATER PLANTS. 
HeERBs with Oprositn ExstrputaAtH LoBED LEAVES, 
Utricularia flexuosa, 
LENTIBULARIACEA. 
KF. B. Liv: $29: 
The Plains, in rice 
fields and marshes. 
Utricularia exoleia, 
LENTIBULARIACE. 
FSD; fav. $29. 
The Plains, in rice 
fields and marshes 
(uncommon). 
Ceratophyllum 
demersum, 
Hornwort, 
CERATOPHYLLACES. 
PB. 1o-y.639: 
The Plains to 
8,000 ft., in still 
water. 
Naias graminea, 
NAIADACE®. 
F. B. I. vi. 569. 
The Plains. 
Naias minor, 
NAIADACER, 
F. B. I. vi. 569, 
The Plains, 
PETALS UNITED, 
like the last species, but generally larger, corolla }-$ 
in. long, main flower stalks with only a few scales. 
like the last species, but very much smaller, capsule 
much larger than the sepals, seeds with thin margin, open, 
nearly entire. 
PETALS NONE. 
rootless, submerged, slender, fragile, stem 8-36 in, 
long, densely leafy, green; leaves 1 in. long, whorled, divid- 
ed into thread-like toothed lobes, spreading in water, 
closing together when lifted out of the water; flowers 
minute, axillary, sessile, male and female flowers on the 
same plant, male flowers solitary, calyx of 6-12, narrow, 2-fid 
awl-like, segments, petals none, stamens 20-30, very short, 
anthers erect, with a minute float at the top to enable it to 
remain near the surface, pollen of the same specific gravity 
as the water to enable it to float about tillit strikes a stigma, 
female with the same calyx as the male flower, no stamens, 
ovary sessile, ovoid, one-celled, style awl-like, stigmated 
surface on one side; fruit a small leathery ovoid, some- 
what flattened nut with a hooked style on the top, and 
2 curved spurs on each side above the base. 
rootstock creeping, submerged, stem 1-2 ft., branched, 
thread-like ; leaves 3 to 1 in., narrowly linear, long-pointed, 
soft, sharply many-toothed, basal lobes (auricles) erec’, 
lanceolate, toothed on both edges; flowers male and 
female on the same plant, minute, axillary, clustered, 
male flowers consist of an outer tubular or inflated tube 
with a thin transparent inner one, stamen one, united to 
the inner tube, female flowers consist of one sessile carpel 
with or without a transparent tube outside, stigmas 2-4, 
slender ; achenes oblong, seed erect. 
but very slender, much 
less broad, leg 
very like the last species, 
branched, leaves less acutely toothed, 
transparent, basal auricles rounded. 
