University of Florida

Plant Identification Learning Module
Glossary of Botanical Terms: S W


A–D

E–N

O–R

S–W

 

S

Samara Fruit Type: Winged fruit; dry, indehiscent. See Figure 26.
samara Figure 26.

 

Scale-like Leaf Shape: Small, short, usually sharp-pointed, broadened at the base. See Figure 27.
scale Figure 27.

 

Segments: In palms, leaf is deeply lobed but not divided.

 

Sepal: One of the parts of the outer whorl of a flower, usually green in color.

 

Serrate Leaf Margin: Sharp teeth pointing toward the apex. See Figure 28.
serrate Figure 28.

 

Simple Leaf: An undivided leaf; without leaflets. See Figure 29.
simple Figure 29.

 

Solitary: single, one flower.

 

Spadix: A flower spike with a thick and fleshy axis, usually densely flowered with imperfect flowers. See Figure 30.
spadix Figure 30.

 

Spathe: A large bract sheathing or enclosing a spadix. See Figure 30.
MISSING FIGURE 30

 

Spike Flower Arrangement: An inflorescence consisting of a central rachis bearing a number of flowers directly attached to the flower stem (i.e., no pedicels). See Figure 31.
spike Figure 31.

 

Spore: A small reproductive structure capable of developing into a new organism.

 

Spur: In fruit, a short shoot that bears the fruit; in flowers, a tubular projection of the corolla.

 

Stamen: The male, pollen-bearing organ of a flower made up of a filament and anther. See Figure 32.
stamen Figure 32.

 

Stolon: Trailing stem above ground, rooting at the nodes.

 

Stone: The woody portion of the protective enclosure surrounding a seed.

 

Stone cell: Hard cells with thick walls that provide support to the plant and give the flesh a gritty texture.

 

Subopposite:  nearly alternate but with close spacing.

 

Succulent: Fleshy and full of juice.

 

Suture:  In fruit, the line where the dry fruit splits open.

 

T

Tendril: A modified leaf or stem, slender and coiling, used for grasping or attaching to a support.

 

Trifoliate: A compound leaf having three leaflets.

 

Tuber: A thickened, short, usually subterranean stem having numerous buds called eyes.

 

Tunicate: Having enwrapping coats or layers, like an onion.

 

U

Umbel Flower Arrangement: An inflorescence consisting of several pedicelled flowers with a common point of attachment. See Figure 33.
umbel Figure 33.

 

Undulate Leaf Margin: Wavy leaf edge (up and down in a vertical plane). See Figure 34.
undulate Figure 34.

 

W

Whorled Leaf Arrangement: Three or more leaves at a node. See Figure 35.
whorled Figure 35.