Scientists made fake leaves and dropped them in water tanks to observe how different shapes move as they sink.

Leaves with a consistent leaf edge are called unlobed leaves while trees with leaves that form shapes along their margins are called lobed leaves. If your tree has unlobed leaves, you must next ...

Naturalist Roger Tory Peterson says that unlike the precise silhouette of birds, a tree is not so consistent in form or shape: "The beginner, learning his trees, yearns for a book that will give ...

Hannah looks at why trees come in such a range of different shapes – even within the same species growing in the same garden. Natural form Some species are naturally variable in form.

But at the same time, these trees affect the size and form of the pest moth's right-forewing ... John Alexander Pulgarín Díaz et al, Size and shape variation of Hypsipyla grandella Zeller ...