Abstract
Erythroxylum steyermarkii Plowman,E. undulatum Plowman andE. williamsii Standley ex Plowman, all known only from Venezuela, are described and illustrated, and their taxonomic and phytogeographic relationships are discussed.
Literature Cited
Badillo, V. M. & L. Schnee. 1972. Clave de las familias de plantas superiores de Venezuela. 5th edition. Revista de la Facultad de Agronomía de la Universidad Central de Venezuela 18: 151.
Bohm, B. A., D. W. Phillips & F. R. Ganders. 1981. Flavonoids ofErythroxylum rufum andErythroxylum ulei. J. Nat. Prod. 44: 676–679.
—, F. R. Ganders & T. Plowman. 1982. Biosystematics and evolution of cultivated coca. Syst. Bot. 7: 121–133.
Ewel, J. J., A. Madriz & J. A. Tosi, Jr. 1976. Zonas de Vida de Venezuela. Ministerio de Agricultura y Cría, Caracas.
Plowman, T. & L. Rivier. In press. Cocaine and cinnamoylcocaine content of thirty-one species ofErythroxylum (Erythroxylaceae). Ann. Bot. (London).
Rivier, L. 1981. Analysis of alkaloids in leaves of cultivatedErythroxylum and characterization of alkaline substances used during coca chewing. J. Ethnopharmacol. 3: 313–335.
Rury, P. M. 1981. Systematic anatomy ofErythroxylum P. Browne: practical and evolutionary implications for the cultivated cocas. J. Ethnopharmacol. 3: 229–263.
Rusby, H. H. 1900. The botanical origin of coca leaves. Druggists Circ. Chem. Gaz. November: 220–223.
Schulz, O. E. 1907. Erythroxylacea.In: A. Engler, editor. Das Pflanzenreich 4(134): 1–164.
Steyermark, J. A. 1979. Plant refuge and dispersal centres in Venezuela: their relict and endemic effect. Pages 185–221.In: K. Larsen & L. B. Holm-Nielsen, editors. Tropical botany. Academic Press, New York.
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Plowman, T. Three new species of erythroxylum (Erythroxylaceae) from Venezuela. Brittonia 34, 442–457 (1982). https://doi.org/10.2307/2806501
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DOI: https://doi.org/10.2307/2806501