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ophis: winter twig, hackberry
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ophis: 1st year twigs typically paired on either side of circular scar
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ophis: central scar on 2nd year twig, perhaps from a reproductive shoot
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ophis: white-hairy appressed buds distichous on 1st year twigs
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ophis: buds borne in notches behind pedestaled leaf scars
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ophis: 1st year twig with channeled pith divided into narrow transverse cells