*54 
THE VEGETATION OF THE DISTRICTS OF 
Sporobolus tremulus , Phragmites Karka , Ceralopteris thalictroides , 
Polypodium quercifolium y P. adnascens andP. irioides . The species 
in this list are exclusively plants that have extended into the Sundri- 
buns and are established in the swamp-forests or at the sea-face. 
One or two of the species, such as Cor did Myxci and Diospyros 
Embryopteris may be plants that were originally deliberately intro- 
duced and that have persisted in abandoned clearings; all are, 
however, truly wild species in the Sundribun region. The species 
that occur as weeds or cultivated plants in existing Sundribun clearings 
are here dealt with along with the other species of the Lower Gange- 
tic plain. 
The species that extend northward into the Central Bengal 
rice-plain from the Sundribuns, especially along river banks, are less 
numerous. They include Hibiscus tiliaceus , Thespesia populnea , 
Aphania Danuta, Erythrina indica , C anavalia turgida , Phaseolus 
adenanthus , Vigna luteola, Pongamia glabra y Derris uliginosa t 
Sonneratia apetala , Morinda bracteata y Blumea amplectens , 
Sphseranthus africanus , Wedelia scandens, Azima tetracantha y 
Pentatropis microphylla , Tylophora tenuis , Stictocardia tilidefolia y 
Acanthus ilicifolius, Premna integrifolia , Clerodendron inerme y 
Psilotrichum ferrugineum , Agyneia bacciformis y Trewia nudi flora 
Excoecaria Agallocha, Ficus Rumphii y Crinum asiaticum y Alpinia 
Allughas y FI ao el l aria indica 3 Pandanus fascicularis , Ruppia 
rostellata y Pycreus polystachyus y Cyperus scariosus , Scirpus 
triqueter var., Paspalum distichum , Zoysia pungens , Acrostichum 
palustre and A. aureum . 
Turning now to the species that are common to Northern Bengal 
or to Western Bengal, of which the somewhat outlying Goghat 
sub-division of the Hughli district is an integral portion, or to the 
drier parts of India further west still, and to the deltaic alluvial 
portion of our area, but that do not enter the Sundribuns though 
in many cases they extend eastward to Indo-China and Malaya, we 
find that we have to deal with a considerable list, though it may be 
remarked that a remarkable proportion of these are species recorded 
as occurring near Serampore or Calcutta by Roxburgh, Carey, and 
Voigt, but not seen from our districts, except from Goghat, and by 
no means in all cases from that sub-division, since 1845. For this 
there are two possible explanations. In some cases it is certain that 
Voigt’s u Serampore plants were brought in by native collectors 
who probably went sufficiently far west in their journeys to reach 
the drier, and though still practically level, yet non-alluvial tract 
just south of Goghat. In other cases the species were collected 
