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 three types of margins in leaves?
There are many different types of leaf margins. A few examples include: Smooth (Figure 4), Saw-Toothed (serrate—Figure 5), very Irregular (Figure 6), and even Armed with sharp spines (Figure 7).
How many 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 is dentate leaf?
Noun. 1. dentate leaf – a leaf having a toothed margin. foliage, leaf, leafage – the main organ of photosynthesis and transpiration in higher plants. denticulate leaf – a leaf having a finely toothed margin; minutely dentate.
What is a leaf arrangement?
leaf arrangement. phyllotaxy – the arrangement of leaves on an axis. 2-ranked – arranged in 2 rows, one on either side of the stem or central axis. alternate – an arrangement with 1 leaf attached at each node. distichous – 2-ranked, with alternate leaves arranged on opposite sides of a stem, not spirally arranged.
What is the leaf margin of onion?
Entire
School of Horticulture Plant Database
| Leaf Morphology: | Glossary |
|---|---|
| Shapes: | Linear |
| Apices: | Acute, Attenuate |
| Bases: | Sheathing |
| Margins: | Entire |
Which leaves have wavy margins?
Polyalthia is a very lofty evergreen tree which is found mainly in India. It belongs to the Annonaceae family. It is effectively planted due to its effectiveness in alleviating noise pollution. The leaves of this tree are lance-shaped and have margins which appear wavy.
What are clasping leaves?
leaf pondweed
Plant Description Clasping-leaf pondweed can be easily identified by its thin, delicate, oval shaped leaves. The leaves are wide with a broad base that ‘clasps’ the stem. Easily visible veins run the length of each leaf, 10 to 16 weaker veins, and usually wavy margins.
What are the lobes on a leaf?
Lobes are projections of the blade with gaps between them (these gaps, however, do not reach the middle vein). Maple leaves, with their distinct pointed projections, are good examples of simple lobed leaves. Unlobed simple leaves have plain, rounded shapes without any projections.
What is the purpose of leaf arrangement?
The function of the arrangement of leaves (phyllotaxy) is to increase a plant’s ability to carry on photosynthesis by positioning the leaves in such away as tomaximize the surface area available to intercept sunlight. Leaves may be either caulescent (on obvious stems) or acaulescent (with no obvious stems).
What is an example of a leaf margin?
Serrate leaves have a leaf margin that looks similar to a saw or serrated knife. The spacing between the teeth does not need to be even and the “blades” of the margin can point straight or lean to one side or the other. Some examples of trees with serrate leaves include apple trees (Malus domestica), boxelder trees (Acer negundo).
What are the types of leaf margins?
Leaves are different shapes. This is because they have different margins. There are many types of margins including entire, dentate, serrate, sinuate, lobed and palmate.
What is entire leaf margin?
Entire margin. The entire margin leaf has no serrated edges, and is composed by one continuous, smooth surface around the whole edge of the leaf. This kind of leaf edge can come in several shapes such as linear (picture), deltoid, eliptical, ovate and more.
Are the leaf margins entire?
The leaf edge, or margin, may be entire or serrated. An entire leaf margin is completely smooth with no small teeth, while a serrated margin has teeth all along the edge. Leaves with entire margins may still be cleft, with deep notches almost to the leaf’s midrib.
