A CENSUS OF THE INDIAN POLYGONUMS, 
435 
To Malay Archipelago and Africa . . 
T# Malay Archipelago, China, and Africa 
To Malay Archipelago, China, Africa, and 
Australasia 
To China, North and Western Asia, 
Europe ...... 
To Australasia, Malay Archipelago, China, 
Northern Asia, Europe 
To China, North and Western Asia, Eu- 
rope^ Africa 
1 (i8) Polygonum tomentosum Wild, 
I (48) Polygonum alatum Ham, 
r (16) Polygonum plebejum i?. 
3 \ (32) Polygonum lanigerum R. Br, 
C (39) Polygonum barbatum Linn, 
I (25) Polygonum Bistorta Linn, 
I (35) Polygonum minus Huds, 
I (34) Polygonum Persicaria Linn, 
. To Malay Archipelago, China, Western 
Asia, Europe, Africa .... 
(40) Polygonum serrulatum Lagasc, 
To China, North Asia, Europe, North 
America 
To China, North Asia, Europe, Africa, 
North America . . . • . 
(21) Polygonum viviparum Linn, 
(65) Polygonum alpinum All. 
(78) Polygonum dumetorum Linn, 
(9) Polygonum aviculare Linn, 
(31) Polygonum amphibium Linn, 
To Australasia, China, Africa, North and 
South America • . . . • 
China, Northern Asia, North America 
China and North America . • • 
Cosmopolitan • « • • • 
■1 
(30) Polygonum glabrum Willd, 
(60) Polygonum sagittatum Linn, 
(20) Polygonum virginianum Linn, 
(58) Polygonum arifolium Linn, 
(33) Polygonum lapathifolium Linn, 
(43) Polygonum Hydropiper Linn, 
21 Total of Eastward and Westward species. 
‘ 79 Total of Indian species. 
All the species which are distributed to North America are confined 
to the east of the Rocky Mountains of that Continent, at first sight a 
curious fact, but one that is quite in accordance with the result established 
by Asa Gray, that the flora of North-East Asia has more affinities with 
that of North-East than that of North-West America, 
