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Tropical trees
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Research expedition. Possibly Mexico.
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Young woman in Powell's orchid garden.
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Powell in his garden.
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Powell in his garden.
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Powell in his garden.
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Powell in his garden.
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George Pring, George T. Moore, Charles W. Powell.
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Tropical Station. Balboa, Panama. See also PML 1983-0565.
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Tropical Station. Balboa, Panama. MBG Bulletin 19(3):45-51. 1931.
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