Spray. The aggregate of smaller branches and branchlets.
Stamen. The pollen-bearing organ of a flower, normally consisting of filament and anther. Page [xiii.]
Staminate. Provided with stamens, but usually without pistils.
Staminodium. A sterile stamen.
Sterile. Unproductive, as a flower without pistil, or a stamen without anther.
Stigma. The part of a pistil which receives the pollen. Page [xiii.]
Stipules. Leaf-like appendages on either side of a leaf at the base of the petiole.
Stipule-scar. The scar left by the fall of a stipule. Page [xv.]
Striate. Marked with fine longitudinal stripes or ridges.