Petiole Features

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  • Petiole: A connection between the leaf base and the twig or stem.While less apparent in the shot of the Doug-fir on the left, notice the thinning of the needle as it attaches to the twig; this is the petiole.
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  • Sessile: Lacking the above above described petiole.
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  • Distinct glands on petiole: Appear like small and funky bumps on petiole.
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  • Leaf base parallel to twig:
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