424 
A CENSUS OF THE INDIAN POLYGONUMSi 
X Peduncles scurfily glandular 
Leaves without canescence 
beneath . , < . P. lapathifolium. 
Leaves canescent beneath . P. lapathifolium 
SUB-SP. maculatum 
X X Peduncles eglandular and 
, either glabrous or hairy 
O Stipules and bracts eciliate 
Plant glabrous . 
^ r Plant covered with a 
cottony tomentum 
O O Stipules and bracts ciliate 
A Leaves long-petioled . 
A A Leaves short petioled 
or sessile. 
II Peduncles stri- 
gosely hairy 
‘ Stipules with 
a spreading 
or recurved 
scabrid limb 
Stipules with- 
out a limb . 
II II Peduncles gla- 
brous 
Spikes oblong- 
cy lindrical. 
Nut not less 
than 3 mm. 
long . 
Spikes narrow- 
ly cylindrical. 
Nut not more 
than 1*5 mm. 
long . 
§§ Nut trigonous 
X Branches and peduncles glan- 
dular and hairy 
X X Branches and peduncles hairy 
or glabrous but never glan- 
dular 
O Bracts and perianth finely 
glandular . . 
P. glabrum, 
P. lanigerum, 
P. orientale. 
P. limbatum. 
P. tomentosum. 
P, Persicaria. 
P. minus. 
P. viscosum. 
P. macranthuin. 
