426 
A CENSUS OF THE INDIAN POLYGONUMSi 
D. Inflorescence of small more or less globose or ohpyramidal heads, 
* Plants dwarf, not exceeding 15 cm. in 
height, often tufted 
t Leaves orbicular . . . . P. nummulari- 
folium. 
tt Leaves linear, ' 
Leaves flat with two basal auricles . P. sibiricum. 
Leaf margins recurved, and wanting 
basal auricles . . , . P. perpusillum. 
ttt Leaves neither orbicular, nor linear 
§ Heads in the axil of an involucral 
leaf , , . . . P. alatum 
VAR. rigidula. 
§§ Heads without an involucral leaf 
Leaves subsessile. Nut bi-con- 
vex « . , • • . humile. 
Leaves long-petioled. Nut tri- 
gonous ... , . P glaciale. 
** Plants not dwarf and never tufted, 
t Plants armed more or less with recurved 
prickles, which may be reduced to a 
few at the base of the stipules 
§ Peduncles glabrous . . - . P. sagittatum. 
§§ Peduncles glandular 
'X Leaves broadly hastate-acumi- 
nate, long-petioled. Nut 
trigonous . , . P. arifolium. 
X X Leaves elliptic-oblong or linear - 
oblong, short-petioled. Nut 
orbicular bi-convex 
O Peduncles sparingly 
branched, with mediumr 
. . sized heads 
Leaves elliptic-lanceolate 
or ovate, acuminate at 
j both ends , . P. pedunculare. 
Leaves oblong or oblong- 
lanceolate, 1 ‘9-2*5 cm. 
broad . . . P. pedunculare 
VAR. nilagirica. 
Leaves linear lanceolate, — 
very narrow, ‘b-’S cm. 
broad • • P. pedunculare 
■- VAR. angustissima. 
