What are the 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.
How do you find the leaf margin?
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 types of leaf base?
Each leaf typically has a leaf blade ( lamina ), stipules, a midrib, and a margin. Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves.
What is the margin in leaf?
The margin is the edge of the leaf lamina lying between the apex and base. Entire margins are smooth, without indentations or incisions. Revolute margins are rolled downward, toward the lower surface of the leaf. Involute margins are rolled upward, or toward the upper surface of the leaf.
What are three types of margins in leaves?
Entire: the leaf margins are not toothed or divided in any way (smooth). Wavy: the leaf margins are not divided but curve up and down (undulate). Crenulate: the leaf margins are cut into small rounded teeth. Toothed: the leaf margins are divided into sharply pointed segments (serrate).
What is a leaf margin?
A margin refers to the edge of the leaf.
When the leaf margin is smooth?
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 entire leaf margin?
Terms describing the margin of the leaf Entire: show all. Margins without teeth or serrations. The term entire refers to leaves that are neither toothed, lobed, or compound, i.e. simple with smooth margins. Sinuous or sinuate: show all. Margins with more or less wavy or sinuous structure in the plane of the leaf.
What are the 5 different types of leaves?
There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant.
What are the margins of a plant leaf?
Revolute margins are rolled downward, toward the lower surface of the leaf. Involute margins are rolled upward, or toward the upper surface of the leaf. Repand margins are slightly and irregularly wavy, with the lamina surface undulating in a downward and upward direction.
What kind of leaves have serrate or dentate margins?
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. In comparison with serrate leaf margins, which they do resemble, you will see that the dentate leaf margin has symmetrical teeth on both sides of the leaf.
How big is the margin of a sinuate plant?
Sinuate or undulate margin. Sinuate or undulate leaves are plants with a trunk and winding branches, often with thorns. They also have large, oval leaves (can reach around 10 to 15 centimeters wide). The leaf margin of a sinuate leaf has slightly jagged edges and is often confused with a lobed leaf, but you just need to look closely.
What kind of teeth are on a leaf margin?
Various shapes and sizes of teeth are associated with leaf margins. Crenate margins have shallowly ascending round or obtuse teeth. Crenulate (minutely crenate) margins have minute, shallowly ascending round or obtuse teeth. Serrate margins have sharp, saw-toothed teeth pointing forward or toward the apex.