The Manual of the Botany of the Northern United States / Including the District East of the Mississippi and North of North Carolina and Tennessee

by Asa Gray

Ternary. Consisting of three.

Ternate. In threes.

Tetradynamous. Having four long and two shorter stamens.

Tetragonal. Four-angled.

Thalamiflorous. Having the parts of the flower hypogynous.

Thalloid, Thallose. Resembling a thallus.

Thallus. In Cryptogams, a cellular expansion taking the place of stem and foliage.

Throat. The orifice of a gamopetalous corolla or calyx; the part between the proper tube and the limb.

Thyrse. A contracted or ovate and usually compact panicle.

Thyrsoid. Resembling a thyrse.