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Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]
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Vein – the externally visible vascular bundles found on leaves, petals, and other parts. Veinlet – a small vein. Leaf Arrangement or Phyllotaxy: Whorl – three or more leaves or branches or pedicels arising from the same node. Leaf Type: Abruptly pinnate – a compound leaf without a terminal leaflet. Leaf Blade Shape:
In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf, [1] but in some species, including the mature foliage of Eucalyptus, [5] palisade mesophyll is present on both sides and the leaves are said to be isobilateral. The leaf is an integral part of the stem ...
A stipule is "adnate" if it's fused together on part of the petiole length, but the anterior is still free. A stipule is "interpetiolar" if it is located in between the petioles, as opposed to being attached to the petioles, and generally one stipule from each leaf is fused together, so it appears that there's just one stipule between each leaf ...
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A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree , although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the bottom.
The Sovereign's Flag for Canada, showing a sprig of three maple leaves as part of the design The flag of Canada, featuring one stylized maple leaf in the centre. The maple leaf slowly caught on as a national symbol. In 1868, it was included in the coat of arms of Ontario and the coat of arms of Quebec, and was added to the Canadian coat of arms ...