( 24 ) 
rcfembling the leaves of Dog-grafs, but fliorter: 
rinder each leaf a thin pellucid membrane encom- 
palfes the ftalk. 
9. Potamogiton gramineuni latifolium^ R. 149.' 
Pondweed, with: broad graffy-leaves. The leaves of 
this are fomething broader than thofe of the former : 
But perhaps it is only a variety, and not a diftindt 
fpecies. 
10. Potamdgiton gramineum latiufculum^ foUis Cs? 
ramificatiofiibus denJUfime ftipatis^ . R . 1 49 . Pondweed, 
with broad graffy-leaves. Its ftalk is crouded witff 
leaves and branches. . 
1 1 . Potamogiton alterum noftras^ longis ^ ohtujts 
fplendentibus foliiSyminutiJfime crenatis^ R. 150. Pond- 
weed, with long, blunt-pointed, Ihining leaves, light- 
ly crenated about the edges. , . 
12. Potamogiton fluvidtife longiffimo gramineo folio 
mftras; R. T50. Pondweed, with very long graffy- 
leaves. In the Thames and Hackney river. The ftalks' 
ai*e larger, the leaves are longer, broader and ftiffer, 
than thofe of the following fpecies. 
. 13. Potamogiton maritimum ramojijfimum grandiuf 
culis capitulis^ capillaceo folio nojlras^ R. 150. Branchy 
Sea Pondweed, with pretty large heads and very 
fmall leaves. 
t4t. Potamogiton millefolium^ feti foliis gramineis 
ramofum^ R.150. Millefolium tenui folium^ G.E. 828. 
Fig. Fine or Fennel-leaved Pondweed. In rivers. 
This plant is full of branches, and the leaves are long- 
and narrow. 
15. Potamogitm pufillum., gra/mineo folio., caule 
tereti., R. 150. 7 ninimum capillaceo folio., C. 191, 
Pr. loi,^ Small grafs-leaved Pondweed. In rivers 
and ditches.- The leaves, are fofter and Ihoiter than, 
thofe of the former : The fpikes of flowers {land 
further out of the water, and the whole plant is 
niuch lefs. 
i'6. Potamogitonis (forte) fpecies foliis tenuibus & 
J>ellucid:s, 
