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Studies in the Genus Hevea I: I. The differentiation of Hevea microphylla and H. minor
Vol 13, Iss 1, Page 1
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An Erroneous Record of Hevea in Colombia
Vol 13, Iss 1, Page 12
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Commentaries on Spiranthes, I: I. Spiranthes tuberosa sensu Fernald
Vol 13, Iss 2, Page 17
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Chicha, A Native South American Beer
Vol 13, Iss 3, Page 33
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Vascular Anatomy of Orchid Flowers
Vol 13, Iss 4, Page 61
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Studies in the Genus Hevea II: the rediscovery of Hevea rigidifolia
Vol 13, Iss 5, Page 97
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Notes on Orchids of the American Tropics
Vol 13, Iss 6, Page 133
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Maize Granaries in Mexico
Vol 13, Iss 7, Page 153
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New Archaeological Evidence on Evolution in Maize
Vol 13, Iss 8, Page 213
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Plantae Austro-Americanae V: de plantis principaliter colombiae observationes
Vol 13, Iss 9, Page 261
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Plantae Colombianae XI: De Plantis Principaliter Colombiae Vallis Amazonicae Observationes
Vol 13, Iss 10, Page 293
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New Concepts in Styrax from Eastern Colombia
Vol 13, Iss 10, Page 325