The cross-section of a leaf reveals its complex structure. The waxy cuticle surface ... You've got the midrib, and the veins, and the edge, and the leaf stem, which is called the petiole.
All leaves have a hierarchy in their vein structure, with veins branching in ... channels that form complete circuits, and divide a leaf into a patchwork of larger and smaller polygons.
Interesting Engineering on MSN9mon
Seed ferns tested leaf vein networks 201 million years ago, here’s howAccording to a new study, web-like patterns of leaf veining in flowering plants ... this species 201 million years ago had ...
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