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Araucaria araucana is an evergreen. The pictured "fruit" is actually more of a cone (which I don't think you'd want to eat). However, the seeds are edible, and look like this: Let the cone dry and it should open up.


The structure you are relating to is a seam (suture). This seam is formed during development of a carpel. The indentation of the seam varies and depends on the climate and environment: for example, water stress will give a very deep suture -

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