386 
A CENSUS OF THE INDIAN POLYGONUMS. 
V.— Bengal : Griffith ! (4) Behar, Kurz ! 
VAk. polyiieiira. 
III. — Peninsular India : (2) North Canara ; Sirey, Talbot, 
No. 389 ! 
Exclusive of the varieties scindica and Miqueliana^ which have 
not been identified by the writer as present in the Calcutta Herbarium 
there have been enumerated above no fewer than eight forms of 
Polygonum plebejum R. Br. The writer finds it very difficult to 
accept all these forms as belonging to one species. The varieties in 
their typical condition at least differ very much more markedly from 
each other than allied but admitted species, such as Polygonum 
recumbens and Polygonum cognatum, or Polygonum paronychioides 
and Polygonum tuhulosum, do from each other. The writer under 
other conditions than the purpose of the present paper admits would 
be strongly inclined to form four species, the composition of which 
may be briefly indicated here, 
( Polygonum plebejum R. Br. proper, 
var. effusa. 
var. elegans. 
var. micranthema. 
r var. indica. 
2nd species= brevifoHa. 
3rd species = var. Griffithii. 
4th species = var. polyneura. 
The altitudinal distribution of those so-called varieties, to which 
the reader may here be referred, would tend to corroborate the writer’s 
ideas, which he had formed purely on morphological grounds. The 
var, Griffithii, in particular, is morphologically very distinct, and has 
a very limited altitudinal range. 
Section IV.— Amblygonon Meisn. 
17 » Polygoimiii orieiitale Linn. 
IV. — Upper Gangetic Plain : (i) Agra and Oudh ; Dehra Dun, 
2,000 ft., Duthie, No. 1973 ! 
V. — Bengal: (5) North Bengal; Garidura in the Terai, Gamble, 
No. 2696 B. ! Caragola, King ! (6) Central Bengal ; 
Calcutta, C, B. Clarke, No. 3641 ! Howrah, T, Anderson ! 
Sibpur, Kurz ! (8) East Bengal ; Comilla, C. B, Clarke, 
No. 6929 ! 
