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Roots: T

tabul-

referring to a tablet, therefore flat (shape) (tabuliformis)

tard-

late (tardiflora = late-flowering)

tartar-

referring to Central Asia (tartaricus)

taur-

referring to a bull (taurinus)

taxi-

referring to the genus, Taxa, the Yew (taxifolius = Yew-like leaves)

tect-

referring to a roof (tectorum)

tenax

tenacious

tenebr-

referring to shadows (tenebrosus)

tenell-

small, delicate (tenella)

tenui-

slender, thin (tenuifolia = thin-leaved)

teret-

circular, cylindrical (teretiformis - in the form of a cylinder)

terebinth-

referring to turpentine (usually the smell) (terebenthifolia = leaves with a turpentine-like odor)

tern-

referring to the number three (ternata / ternifolia = three-leaved)

terr-

referring to (the) earth (terrestris)

tessel-

tessellate (a squared pattern) (tessellata)

testud-

referring to a tortoise (testudinaria = like a tortoise shell))

tetra-

referring to the number four (tetragonus = four-angled)

-thal(...)

referring to a branch (Pleurothallis = side branch)

-thamn(...)

referring to a plant, a bush (Rhodothamnus = red plant)

-thec(...)

referring to a sheath (microthecum = small sheath)

therm-

referring to heat, hot springs (thermalis)

thyrs-

referring to a flower cluster (+ or - pyramid-shaped) (thyrsoidea)

tigr-

referring to a tiger (striped) (tigrinus)

til-

referring to the genus Tilia, the Linden tree (tilioides)

tinct-

referring to a dye (tinctoria)

tomentos-

pubescent (tomentosum)

tort-

twisted (tortilus)

toxi-

referring to a poison (Toxicodendron = poison tree)

trachy-

rough (Trachycarpus = rough fruit)

tremul-

trembling, (tremuloides)

tri-

referring to the number three (Trifolium = three leaves, the Clover genus)

trich-

referring to a hair (tricholepis = hairy scale)

trist-

sad, bitter (usually referring to color, or shape, like somber color, or drooping) (tristus / triste)

triti-

referring to the wheat plant (triticina)

trivi-

common, frequent (trivialis)

-trop(...)

turning towards (Heliotropium = turning towards the sun) (also can refer to a keel)

tuberc-

referring to referring to small tuber-like protruberances

tubi-

referring to tube (shape) (tubiflora)

tumid-

swollen (tumidus)

tunic-

referring to a tunic, i.e., covered (tunica / tunicata)

turbin-

shaped like a top (turbinatus)

typh-

smokey, dull (typhina)