Part 70

=Silky= Covered with soft, straight, fine hairs.

=Simple= Consisting of one part, not compound.

=Sinuate= Having a strongly wavy margin.

=Sinus= The cleft or opening between two lobes.

=Species= A group of like individuals as Red Oak, White Oak, etc.

=Spike= An elongated axis bearing sessile flowers.

=Spine= A sharp woody outgrowth.

=Stamen= The part of a flower which bears the pollen.

=Staminate= Said of flowers which bear only stamens. Sometimes spoken of as male.

=Sterile= Barren; unproductive.

=Stigma= The end of a pistil through which pollination takes place.

=Stipule= A leaf appendage at the base of the leaf-stalk.

=Striate= Marked with fine elongated ridges or lines.

=Strobile= A fruit marked by overlapping scales as in the Pine, Birches, etc.

=Style= The pin-like portion of a pistil bearing the stigma.

=Sub-= A prefix meaning under or nearly.

=Sucker= A shoot arising from an underground bud.

=Suture= A line of dehiscence.

=Symmetrical= Regular as to the number of parts. Having the same number of parts in each circle.

=Terete= Having a circular transverse section.

=Terminal= Pertaining to buds located at the end of twigs.

=Thorn= A stiff, woody, sharp-pointed projection.

=Tolerant= Applied to trees which endure certain factors, particularly shade.

=Tomentum= A dense layer of hairs.

=Tomentose= Densely pubescent; hairy.

=Truncate= Ending abruptly as if cut off at the end.

=Tubercle= A small tuber or tuber-like body.

=Tufted= Growing in clusters.