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  1. Five new species of Brunfelsia from South America (Solanaceae) / Timothy Plowman.
    By: Plowman, Timothy.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1981.
    Contributed by: University of Illinois Urbana Champaign
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  2. A revision of the South American species of Brunfelsia (Solanaceae) / Timothy C. Plowman ; S. Knapp and J.R. Press, editors.
    By: Plowman, Timothy. - Knapp, Sandra. - Press, J. R.
    Publication info: Chicago, Ill. :Field Museum of Natural History,c1998.
    Contributed by: University of Illinois Urbana Champaign
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  3. Ten new species of Erythroxylum (Erythroxylaceae) from Bahia, Brazil / Timothy Plowman.
    By: Plowman, Timothy.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1987.
    Contributed by: University of Illinois Urbana Champaign
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  4. Useful plants of the Siona and Secoya Indians of eastern Ecuador / William T. Vickers, Timothy Plowman.
    By: Vickers, William T. - Plowman, Timothy.
    Publication info: Chicago, Ill. :Field Museum of Natural History,1984.
    Contributed by: University of Illinois Urbana Champaign
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