A CENSUS OF THE INDIAN POLYGONUMS: 
427. 
O O Peduncles exceedingly 
slender branching free- 
ly and dichotomously 
and ending in very 
small heads , . P. pedunculare 
VAR. assamica. 
tt Plants unarmed 
§ Capitula at the apex of exceedingly 
long, slender, erect, and rodlike 
stems, with very distant nodes, 
entirely naked or showing only 
one or two small feebly de- 
veloped leaves on the lowest 
nodes. Stipules scale-like . 
§§ Capitula on distinct solitary or 
branched peduncles arising from 
ordinary leafy branches. Sti- 
pules tubular 
X Leaves pinnatifidily lobed 
Leaves coarsely lobed. Ped- 
uncles glandular-hairy 
Leaves finely cut. Ped- 
uncles glabrous • 
X X Leaves entire 
O Peduncles quite glabrous 
Petiole winged ; non- 
auriculate 
Petiole auriculate, not 
winged 
O O Peduncles glandular-hairy 
or hispidulous, at least 
near the heads 
A Every or almost every 
head in the axil of 
an involucral leaf . 
A A Heads not in the axils 
of involucral leaves 
II Main peduncles 
endin g i n a 
single capitulum 
or dividing into 
only 2-4 uni- 
capitate branches 
P. Gilesii. 
P. runcinatum. 
P. sinuatum. 
P. microcephalum. 
P. Wallichii. 
P. alatum. 
