30 POLYGONACEEZ. 
Inflorescence terminal, racemose spicate or 
capitate :-— 
Inflorescence in elongate stout or filiform 
racemes or spikes :— 
Nutlets biconvex :— 
Bracts hairy :— 
Bracts coarsely hairy or strigose :-— 
Leaves ovate, petioles 1-4 in. long . 
mpayes lanceolate, sags less than 
$ 1a. long 
Reacts densely a 
Bracts glabrous :— 
Perianth not glandular, ochree usu- 
ally eciliate ‘ 
Perianth glandular, ochre shortly 
ciliate : , . 
_ Nutlets triganous :— 
[PoLYGONUM: 
a>, F, OF ientale. 
3° P. limbatum. 
4. P. lanigerum. 
5. P. glabrum. 
6. P. lapathifolium. 
Racemes stout and short, with closely 
imbricate bracts, perianth not glan- 
dular :— 
Bracts more or less hairy 
Bracts glabrous :— 
Leaves tapering to the acute base, 
marginal cilia of ochree longer 
than the tube 
Leaves tapering to a rounded or 
subcordate base, marginal cilia of 
ochree not longer than the tube 
“Racemes slender, filiform, bracts more 
or less distant :— 
Perianth glandular; stems shortly 
7. P. stagninum. 
8. P. barbatum. 
9. P. serrulatum. 
creeping below; nutlets not 
polished :— 
Ochrez very shortly ciliate or eci- 
hate ; bracts glandular or not . 
Ochree with cilia at least half as 
long as the tube ; bracts maths 
glandular 
Perianth not eee very 5 Stil 
stems extensively sie a below ; 
nutlets polished . 
10. P. Hydropiper. 
. 11. P. flaccidum. 
12. P. Posumbu. 
