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Vegetative

53-Opposite leaves

[FMP-field: image]

When there are two leaves (or two axillary buds) per node, borne on opposite sides of the stem, leaves are said opposite. This is a branch of Acer carpinifolium (a very unusual species of maple with "un-maple-like" leaves). See Image 56 for more typical maple leaves, also oppositely arranged.

Here all leaves or axillary buds are in the same planar. In the case of horse chestnut tree (see Image 45), and in Lamiaceae, which also have opposite leaves, buds of consecutive nodes are in perpendicular planes: they are opposite and decussate.


Photo by K. R. Robertson at the Hillier Arboretum, Hampshire, England.

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