THE VEGETATION OE THE DISTRICTS OF 
These it seems more satisfactory to enumerate separately ; they are 
therefore given in the following list -.-—Nympkgea Lotus , N. rubra 
and N. stellata, Nelumhium speciosum , Hydrocera triflora, /Eschy- 
notnena indica and PE. aspera , Neptunia oleracea , Aldrovanda 
vesiculosa , Myriophyllum tuberculatum and M,. indicum , Jussiaea 
repens , 7 rapa bispinosa , Enhydra fluctuans , Limnanthemum crista - 
and L. indicum , Ipomoea reptans , Ulrica lari a stellar is, 
U. flexuosa, U .exoleta and *£/. reticulata , Ceratophyllum de me r sum 
Hydrillaverticillata , Laga rosiphon Roxburghii , Vallisneria spiralis) 
Blyxa Roxburghii , H ydrocharis cellulosa , O ttelia alismoides, Pistia 
Stratiotes , Cryptocoryne spiralis , Lemna paucicostata , Z. trisulca , L . 
polyrrhiza and L. oligorrhiza, Woljfla arrhiza and IT’. microscopica , 
Aponogeton monostachya , A. echinatum and /I. crispum , Potomo* 
geton indicus, P. crispus and P. pectinat us, Najas indica, N. minors 
N. foveolata and 77. graninea, Erio caulon Capillus-naiadis 
Cyperus Cephalotes, Change r aphis spinescens , Panicum Myurus, 
P . interr upturn and P. proliferum , Leersia kexan dra, Hygrorhiza 
dristata , Coix aquatica, Salvinia cucullata , Azolla pinnata. Isoetes 
coromandeliana . ■ ! 
The species that are not to be found to the west of the Gangetic 
plain are strikingly few in number. Of those that are either plants 
of dry places or, if they occur in or near ponds or marshes, are erect 
we find the following 'Brassica agrestis , *Spondias mangifera , 
Rhynchosia bracteata, *Erythrina ovalifolia,Sesbania paludosa, Am - 
mannia salicifolia, Blumea anplectens, Bothriospermum tenellum , 
Cressa cretica, Merremia chryseides, Operculina Turpethum, Lim* 
nophila erecta, Lantand indica, Li'ppia geminata, Lit seed salicifolia, 
Acalypha fallax , Pilea microphylla, Ficus heterophylla, Commelina 
appenditulata, Typhonium Schottii, * Alocasia cucullata , * Cyperus 
digitatus , Mariscus ferax, Scirpus affinis, * Sac char um fuscum , 
Pollinia conjugatd. The only floating or submerged aquatic species 
which do not extend westward from our districts are Euryale ferox 
and Chameeraphis spinescens), * :• ' • • .. 
In considering the residual species it is most convenient to deal 
separately with the staple crops .grown' in* the districts; with the 
species that are systematically planted or that, have' been purposely- 
introduced for various reasons ; and finally with the species that have 
been accidentally or inadvertently introduced. 
The crops cultivated are largely Indian, though a fair proportion 
are originally of foreign origin. They include Brassica juncea, Rai, 
probably originally Chinese, Brassica Rapa , the Turnip, probably 
originally Central Asiatic; Brassica Sarson, the Indian Colza, prob- 
