What is a dentate leaf margin?
A dentate margin has square or rectangular teeth along the margin that point outward. This differs from serrate by the direction of the teeth. Serrated teeth point forward toward the apex of the leaf. Botanical Terminology > Leaf Margins > Dentate.
What are the 4 types of leaf margins?
Leaf margins
- Leaf margins: main part of the leaf, usually large and flat.
- Undulate: having a wavy margin.
- Sinuate: with a sinous margin.
- Serrate: having a sharp edge.
- Dentate: having a toothed margin.
- Lobate: lobed.
- Scalloped: with a scalloped margin.
- Palmate: like the fingers of a hand spread open.
What are the three types of leaf margins?
Leaf Edges or Margins
- Entire Leaf: The margin is even and smooth around the entire leaf edge.
- Toothed or Serrated Leaf: The margin has a series of toothlike pointed teeth around the entire leaf edge.
- Lobed Leaf: The margin has an indention or indentions that go less than halfway to the leaf midrib or midline.
What are the two types of leaf margins?
Leaf margin. The basic types of margins are: Entire: having a smooth edge with neither teeth nor lobes. Toothed : having a saw like margin with small tooth that can vary in size (from very small to medium), in sharpness (from needle-like to soft) and in shape (from rounded to points).
What is the function of a leaf margin?
Leaf margin analysis is a way of telling average temperature by looking at the shape of leaves. Scientists have observed that in warm tropical areas, you find a higher percentage of leaves with smooth edges (aka “margins”) like in figure A; the opposite is true in cooler climates, more like figure B.
What is acute leaf?
Definition. Sharp; usually referring to the apex of a flattened structure (such as a leaf) in which the two sides are straight and, when they meet, form an angle that is always less than 90°
Where is the margin of a leaf?
The leaf margins are entire and the primary veins arch up from the point where the petiole attaches to the blade and converge at the apex of the leaf blade.
What is apex in leaf?
The leaf apex is a protruding part of a leaf where water droplets accumulate, and droplet separation occurs during drainage.
What is the function of margin in leaf?
Hint: The leaf margin is the boundary area of the leaf that is extending along the edge of the leaf. There are many types of leaf margins that are important for plant identification. While leaves on a single tree may have different sizes, they will have the same general shape and margin.
What is the importance of leaf margins to a plant?
They are probably referring to the margin/edges of the leaf and are important characteristics for identifying the genus, species and cultivars of plants. The margin also adds texture to the leaf and so is important in garden design.
What does dentate leaf mean?
Edges scalloped with straight points, like the common brown chestnut, are called dentate leaves. They can be simple leaves or compound leaves, the one in the image being another ype of chestnut leaf where you can see the dentate leaf margins on the different parts of the one leaf.
What is the definition of leaf margin?
The leaf margin is the boundary area extending along the edge of the leaf. There are lots of different types of leaf margins that are important for plant identification. The basic types of margins are: Entire: having a smooth edge with neither teeth nor lobes.
What are the different shapes of leaves?
Ovate leaves are egg-shaped with the widest point being nearer the stalk