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ophis: american elm
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ophis: end bud subtended by leaf scar on one side and truncate projection on other
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ophis: 1st year twig
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ophis: lateral bud and leaf scar
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ophis: node marked by scale scars separating yellow brown 1st year twig from gray olive 2nd year twig
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ophis: 2nd year twig with 1st year offshoots
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ophis: all 1st year twigs except the lowermost