Spray. The smaller branches and ultimate branchlets of a tree taken as a whole.
Stamens. The pollen-bearing organs of a flower, each stamen consisting of a filament (stem) and anther which contains the pollen.
Sterile. Variously applied: to flowers with stamens only; to stamens without anthers; to anthers without pollen; to ovaries not producing seed, etc.
Stigma. Part of pistil which receives the pollen.
Stipels. Appendages to a leaflet, analogous to the stipules of a leaf.
Stipules. Appendages of a leaf, usually at the point of insertion.
Striate. Streaked, or very finely ridged lengthwise.
Style. Part of pistil uniting ovary with stigma; often wanting.
Sucker. A shoot of subterranean origin.