LITERATURE CITED

Borchsenius, F., H. Borgtoft Pedersen & H. Balslev. 1998. Manual of the palms of Ecuador. AAU Report 37: 1-217.

Burret, M. 1930. Geonomeae americanae. Engler Bot. Jahrb. Syst. 63: 123-270.

Cronk Q. 1998. The ochlospecies concept. In: Huxley C, Lock J & Cutler D (editors). Chorology, taxonomy and ecology of the floras of Africa and Madagascar. Pp. 155-170. Kew: Royal Botanic Gardens.

Davis, J. & K. Nixon. 1992. Populations, genetic variation, and the delimitation of phylogenetic species. Syst. Biol. 41: 421-435.

Hammel, B., M. Grayum, C. Herrera & N. Zamora. 2003. Manual de Plantas de Costa Rica. Volumen II. Missouri Botanical Garden.

Henderson, A. 1995. The palms of the Amazon. Oxford University Press, New York.

Henderson, A. 2005. Commentary. The methods of herbarium taxonomy. Syst. Bot. 30: 453-456.

Henderson, A & R. Martins. 2002. Classification of specimens in the Geonoma stricta (Palmae) complex: the problem of leaf size and shape. Brittonia 54: 202-212.

Henderson, A., G. Galeano & R. Bernal. 1995. A field guide to the palms of the Americas. Princeton University Press, Princeton, New Jersey.

Holmgren, P., N. Holmgren and L. Barnett. 1990. Index Herbariorum. Part I: the herbaria of the world. Eighth edition. Regnum Vegetabile 120: 1-693.

Luckow, M. 1995. Species concepts: assumptions, methods, and applications. Syst. Bot. 20: 589-605.

Nixon, K. & Q. Wheeler. 1990. An amplification of the phylogenetic species concept. Cladistics 6: 211-223.

Read, R. 1979. Palms of the Lesser Antilles. Department of Botany, Smithsonian Institution, Washington.

Rohlf, F. 2000. NTSYS. Numerical taxonomy and multivariate analysis system. Version 2.1. Exeter Software, New York, New York, USA.

Stevens P. 1991. Character states, morphological variation, and phylogenetic analysis. Systematic Botany 16: 553-583.

Tabachnik, B. & L. Fidell. 2001. Using multivariate statistics. Fourth edition. Allyn and Bacon, Boston, MA.

Thiele K. 1993. The holy grail of the perfect character: the cladistic treatment of morphometric data. Cladistics 9: 275-304.

Uhl, N. & J. Dransfield. 1987. Genera Palmarum. Allen Press, Lawrence, Kansas.

Wessels Boer, J. 1965. Palmae. Flora of Suriname 5(1): 1-172. E. J. Brill, Leiden.

Wessels Boer, J. 1968. The geonomoid palms. Verh. Kon. Ned. Akad. Wetensch, Afd. Natuurk., Tweede Sect. ser 2, 58: 1-202.

Wessels Boer, J. 1988. Palmas indigenas de Venezuela. Pittieria 17: 1-332.

Wilkinson, L. 1997. Systat Statistics version 7.0 for Windows. SPSS, Chicago, Illinois.

Willdenow, C. 1805. Species Plantarum. Vol. 4. Berlin.