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I_SB43083 Betula occidentalis whole tree or vine - general |
I_SB43085 Betula occidentalis leaf - showing orientation on twig |
I_SB43088 Betula occidentalis leaf - showing orientation on twig |
I_SB43090 Betula occidentalis leaf - whole upper surface |
I_SB43091 Betula occidentalis leaf - margin of upper + lower surface |
I_SB43093 Betula occidentalis twig - orientation of petioles |
I_SB43094 Betula occidentalis bark - of a small tree or small branch |