Leaf Charts, Botany, School Education

Quick Answer: Leaf Charts are botany wall charts illustrating the parts of a leaf, venation patterns, simple and compound leaves, leaf arrangement on the stem and, in many sets, the internal structure seen in a leaf section. They are used in school biology to teach leaf morphology and photosynthesis.

Leaf Form, Venation and Internal Structure

A labelled leaf on leaf charts shows the leaf base, the petiole or stalk, and the flat lamina with its midrib, veins and margin; some leaves also carry small stipules at the base. Venation diagrams contrast the net-like reticulate venation of dicots, such as the peepal or hibiscus leaf, with the parallel venation of monocots, such as grass, maize and banana.

Further panels usually show simple versus compound leaves, with pinnately compound examples such as neem and rose and a palmately compound example such as silk cotton, and phyllotaxy: alternate leaves in china rose and mustard, opposite leaves in guava and Calotropis, and whorled leaves in Alstonia. Leaf modifications may be included too, such as pea tendrils, cactus spines and the fleshy food-storing leaves of onion.

A leaf section adds the upper and lower epidermis, the palisade and spongy mesophyll, the vascular bundles of the veins and the stomata with their guard cells, which links leaf structure directly to photosynthesis and transpiration.

Specifications

Care & Handling

• During leaf-collection lessons, spread fresh or wet leaves on newspaper on the bench and never press them against the leaf chart.
• Choose a wall with good daylight for comparing specimens, but where direct sun does not strike the sheet.
• Store the leaf sheets with the stem and root titles so the plant-organ series stays together.

Applications

• Leaf-collection activities in which students sort leaves by venation, margin and arrangement
• Preparing a leaf peel to see stomata, with the chart as the reference drawing
• Teaching photosynthesis and transpiration from the leaf section
• Plant identification for a school garden or herbarium project

Why Choose LabEquip

Botany teachers often buy leaf charts together with the Stem Charts and Root Charts so the vegetative organs are covered as one series. Orders and class levels can be sent through the LabEquip contact page.

Frequently Asked Questions

What is the difference between reticulate and parallel venation?

In reticulate venation the veins branch to form a network, which is typical of dicot leaves such as hibiscus. In parallel venation the veins run side by side along the lamina, which is typical of monocots such as grasses and banana.

How can I tell a compound leaf from a twig with simple leaves?

Look for buds. A bud sits in the axil of the petiole of a whole leaf, including a compound leaf, but never in the axils of its leaflets. A twig bearing simple leaves has a bud at the base of every leaf.

What are stomata and where are they found?

Stomata are tiny pores in the leaf epidermis, each bordered by two guard cells that open and close it. They let carbon dioxide in and oxygen and water vapour out, and in many plants they are more numerous on the lower surface.

Why is the palisade layer just below the upper epidermis?

Palisade cells are packed with chloroplasts and lie close to the upper surface, where light is strongest, so most photosynthesis happens there. The spongy mesophyll below has air spaces for gas exchange.

What is phyllotaxy?

The pattern in which leaves are arranged on the stem: alternate, with a single leaf at each node; opposite, with a pair at each node; or whorled, with more than two leaves at one node.

How can students see leaf structures for themselves?

Peel the thin lower epidermis from a leaf such as Rhoeo or Tradescantia, stain it lightly and view it under a microscope to see stomata and guard cells. A crayon rubbing of a leaf shows its venation clearly.

Last Updated: September 2026