Triple-ribbed, Triple-nerved, &c., where a midrib branches into three, near the base of the leaf.
Triquetrous, sharply three-angled; and especially with the sides concave, like a bayonet.
Triserial, or Triseriate, in three rows, under each other.
Tristichous, in three longitudinal or perpendicular ranks.
Tristigmatic, or Tristigmatose, having three stigmas.
Trisulcate, three-grooved.
Triternate, three times ternate, [59].
Trivial Name, the specific name.
Trochlear, pulley-shaped.
Trumpet-shaped, tubular; enlarged at or towards the summit.