tendril. A slender coiling member of a plant that enables it to climb. A tendril may represent a branch, a petiole, a leaflet, a stipule, an entire leaf.
terminal. At the end; as a flower borne on the end of a shoot. See lateral.
thyrse. A compound, usually elongated or pyramidal flower-cluster in which the mode of inflorescence is mixed.
torus. The end of the flower-stalk (usually somewhat enlarged) to which the flower-parts are attached; receptacle.
transpiration. Evaporation or loss of water from plants.
umbel. A flower-cluster opening from the outside, in which the branches or stems arise from one place, as the rays of an opened umbrella.
umbellet. A small umbel, comprising part of a larger or compound umbel.
valve. One of the integral parts into which a fruit or an anther naturally splits, or into which it is divided.
venation. The mode or fashion of veining, as in a leaf or petal.
xylem. Wood tissue.