230 MONOECIA POLYA^'DRIA. 
The feminine are on the fame plant with the mafciiline. 
I'he cup is multipartite, the fegments fubuiated and 
equal. The germen is oval and compreiTed; the ftig- 
ma is obtufe and oblique. The nut is oval, unilocular, 
and acuminated. 
Demerfum. Horned Pondweed. In flow running wa- 
ter and ditches. In a ditch belonging to Chrijl-Churck 
meadow. Per. July. 
MYRIOPH YLLUM. Water Millfoil. 
The mafcnline cup has four oblong, ered leaves, the 
ou'trnofl is larger and innermoft leaft. There are eight 
hairy flaccid filaments longer than the cup, with oblong 
antheras. The feminine cup is the fame as the maf- 
culine. There are tour oblong germina,' and a hairy 
ftigma and four oblong feeds. 
Spicatum. Spike dJVater Mfilfoil With m2i{c\xYmt flowers 
interruptiy fpiked. In the river on Hounjlow heath. In 
ditches, lakes, and kill waters. Per. July., Aug. 
Virticillatum. Virticillated JVatcr Milifcil with all the 
Bowers in whorls. In ditches and Handing waters. Per, 
July. 
SAGITTAPvIA. Arrow-head. 
The mafculine flowers are more than the feminine. 
The cup hath three oval, concave, patent, permanent 
leaves. The flower hath three roundifli, obtufe, plain, 
patent petals, three times as large as the cup. There 
are often twenty four filaments, collected into a head, 
having eredt antherse the length of the cup. The femi- 
nine petals and cup are the fame as the mafculine. The 
germina are numerous, comprefled, formed into a head, 
externally gibbous, ending in very fhort ftyles, having 
acute permanent fligmata. The receptacle is glcbofe, 
and the feeds are colledted into the form of a globe and 
are numerous, oblong, comprefled, furrounded longitu- 
dinally with a broad membranaceous margin, gibbous 
on one flde, and accuminated on both. 
Sagittifolia, 
