Myriophyllum
noun
Myr·i·o·phyl·lum
ˌmirēōˈfiləm
: a widely distributed genus of submerged aquatic plants (family Haloragaceae) having much-divided whorled or alternate leaves and emersed wind-pollinated flowers see water milfoil
Word History
Etymology
New Latin, from Latin myriophyllon water milfoil, from Greek, from myrio- myri- + phyllon leaf