A CENSUS OF THE INDIAN POLYGONUMS^ 
439 
Species with an extra-Indian distri- 
bution 
Section VIL’^Persicaria, 
(30) Polygonum glabrum Willd, 
(35) Polygonum minus Huds. 
(39) Polygonum barbatum Linn. 
(40) Polygonum serrulatum Lagasc, 
(43) Polygonum Hydropiper Linn, 
(44) Polygonum flaccidum Meisn. 
I4'{ Section VIII.—Cephalophilon» 
(48) Polygonum alatum Ham. 
(Si) Polygonum runcinatum Ham, 
(55) Polygonum chinense Linn, 
var. ovalifolia. 
Section IX'-^Echinocaulon, 
(61) Polygonum strigosum R. Br, 
^ (64) Polygonum pedunculare WalL, 
Total of Peninsular India species : 14, or 177 per cent. 
IV.— Upper Gangetic Plain. 
Species endemic to the sub-sub-area 
Species distributed to other sub-sub- 
areas 
Species with an extra Indian distri- 
bution 
No species. 
No species. 
Section UL^A'oiculana, 
(16) Polygonum plebejum R, Br, 
Section lV,'-Amblygonon, 
(17) Polygonum qrientale Linn, 
(19) Polygonum limbatum Meisn, 
Section VII,-“Pefsicaria, 
10 
(30) Polygonum glabrum Willd. 
(32) Polygonum lanigerum R. Br, 
(39) Polygonum barbatum Linn. 
(40) Polygonum serrulatum Lagasc, 
(41) Polygonum Posumbu Ham. 
(44) Polygonum flaccidum Meisn, 
Section VllL^Cephalophilon, 
(48) Polygonum alatum Ham, 
Total number of Gangetic plain species : 10, or 12*7 per cent. 
V.— Bengal. 
No species. 
Species endemic to the sub-sub-area 
Species distributed to other sub-sub- 
areas 
Species with an extra-Indian distri- 
bution 
19 < 
No species. 
Section III, — Amcularia. 
(16) Polygonum plebejum R. Br. 
Section IV.—Amhlygonon, 
(17) Polygonum orientale Linn. 
(18) Polygonum tomentosum Willd, 
^ (19). Polygonum limbatum Meisn. 
