telmati´um (τέλμα, ατος, water meads), a wet meadow formation; telmatad, a wet meadow plant.
testaceus, pale brick colored.
thalassi´um (θάλασσα, sea), a sea formation; thalassad, a sea plant.
thallostrote (θαλλός, shoot), a species migrating by means of offshoots.
theri´um (θήρ, wild animal), a succession due to animals.
thermi´um (θέρμη, hot spring), a hot spring formation; thermad, a hot spring plant.
thini´um (θίς, θινός, a dune), a dune formation; thinad, a dune plant.
tiphi´um (τῖφος, pool), a pool formation; tiphad, a pond plant.
tiri´um (τείρω, rub away), a bad land formation; tirad, a bad land plant.
tonobole (τόνος, tension), a plant whose seeds are scattered by projection from calyx or involucre.