semantic pointers
hypernym
hyponym
clover fern, pepperwort
pillwort, Pilularia globulifera
regnellidium, Regnellidium diphyllum
floating-moss, Salvinia rotundifolia, Salvinia auriculata
mosquito fern, floating fern, Carolina pond fern, Azolla caroliniana
floating fern, water sprite, Ceratopteris pteridioides
floating fern, Ceratopteris thalictroides