motile, able to move by growth, by means of cilia, etc.
mutable, able to produce mutants; mutant, a form arising by mutation; mutation, the sudden appearance of new forms.
namati´um (νάμα, ατος, brook), a brook formation; namatad, a brook plant.
nomi´um (νομός, pasture), a pasture formation; nomad, a pasture plant.
occupation, possession of the ground by plants.
oceani´um (ὠκεανός, ocean), an ocean formation; oceanad, an ocean plant; oceanophyte, an ocean plant; oceanophilous, ocean-dwelling.
ocheti´um (ὀχετός, drain), a succession due to artificial drainage.
ochroleucus, yellowish white.
ochthi´um (ὄχθη, bank), a bank formation; ochthad, a bank plant.
oligope´lic (ὀλίγος, little, πηλός clay), containing little clay; oligopsam´mic (ψάμμος, sand), containing little sand.