222 
PLANTS OF NORTHERN OUJARAT. 
the tanks are of standing water, the difference between the two, at no 
time marked, cannot be maintained. Thus we unite here the u Hydro- 
charid ” (free-floating) and “ Limnaea 3} (attached) Formations of Warm- 
ing and include as one formation all the water plants which either 
have their vegetative organs entirely submerged, or have at most 
floating leaves. 
The associations of these are rather variable, and we have thought it 
best to include them together as one list, though by no means all would 
be found in any one locality. The following list includes all the plants 
we have noted - 
(а) Abundant— 
Nymphaa Iotits> Ipomcea aquatica, Hydrilla verticillata , 
Vallisneria spiralis , Zannichellia palustriSjPotaviogeton 
pectinatuSj Azolla sp., Char a (2 or 8 species), Nitella 
sp., and various other algse. 
(б) Common — 
Nelumbium speciosum , Potamogeton perfoliatus , P crispua , 
Limnophyton obtusifolium , Trapa bispinosa y (Culti- 
vated), Naias minor x Utricularia stellaris , Lemna 
polyrhiza . 
(c) Local — 
Lmnanthemum sp., Jussicsa repens y Ceratophyllum demersum. 
Class 2. Helophytes. 
This class is very well represented in our area. We have no associa- 
tions which can be referred to Warming's Bush-Swamp Formation 
(loc. cit. p. 187), but we have his Reed Swamp Formation, and a second 
formation entirely distinct from anything mentioned by that author, 
and very clearly outlined, which we call the Formation of Dried Mud. 
I. Reed-Swamp Formation. 
A. Typlieta. 
Where the water is deeper Typha angustata is found alone, and forms 
a belt between the Hydrophytic plants just described and the associa- 
tions which will follow . The most conspicuous Typheta fringe the 
Large Bokh at Frantij. 
B. AncSropogoiseta. A. squarrosi. 
There are tracts bordering some shallow tanks where the vegetation 
is entirely composed of closely placed clumps of this grass. These 
