Leaf Sharp Edges
Apr 26, 2026 • 9:05 PM UTC
United States
50x Magnification
Plants
Basel AlKanjo
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For my Foldscope observation, I looked closely at the outer edge of a green leaf. My question was: what does the border of a leaf look like when it is magnified, and is it actually as smooth as it appears to the naked eye? I collected a small leaf sample from bushes surrounding my dorm in West Lag at Stanford Campus, and placed it under the Foldscope so that the edge of the leaf was visible. From normal vision, the leaf edge looked mostly smooth, but under the Foldscope I noticed that the border had sharper shapes and pointed sections. This made the leaf margin look more complex than I expected. The image supports this because the edge of the leaf appears as a defined, slightly pointed boundary where the green tissue ends. This made me wonder what function these sharp edges might serve. They could possibly affect how the leaf grows, how water moves across the surface, how the leaf interacts with insects, or how different plant species are shaped by their environments. A question I still have is whether sharper leaf edges are more common in certain species or habitats.
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