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Cycad classification: concepts and recommendations.

Book cover for Cycad classification: concepts and recommendations.

Description

This book presents the current state of our knowledge of the systematics of the approximately 300 species of cycads. It has been developed from 15 papers presented at the conference in Miami. Guidelines are presented for the designation of species, species boundaries and species groupings, thus clarifying what has been a confused area of research. Two appendices are included in this volume. The fi...

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Chapter 13 (Page no: 159)

Systematics of Meso-American Zamia (Zamiaceae).

The author's work includes morphological, geographical and phenetic analyses of Meso-American Zamia representatives and is a continuation of earlier Master's and Doctoral studies. This research has led to the publication of six new species descriptions; in addition, several others are in progress, several preliminary species groups have been recognized and recommendations made for future work. However, an infrageneric classification has not yet been included. Such a classification will depend on the culmination of alpha-taxonomic work in the genus, thorough morphological and geographical characterization of all known species, and finally, cladistic analyses, including those arising from molecular systematic investigation. Examination of possible introgression and hybrid species complexes is also necessary for a thorough understanding and development of an infrageneric classification in Zamia.

Other chapters from this book

Chapter: 1 (Page no: 1) 'We Hold these Truths ...'. Author(s): Walters, T. Osborne, R. Decker, D.
Chapter: 2 (Page no: 13) Saving ghosts? The implications of taxonomic uncertainty and shifting infrageneric concepts in the cycadales for red listing and conservation planning. Author(s): Donaldson, J.
Chapter: 3 (Page no: 23) Character evolution, species recognition and classification concepts in the Cycadaceae. Author(s): Hill, K. D.
Chapter: 4 (Page no: 45) Morphological characters useful in determining species boundaries in Cycas (Cycadaceae). Author(s): Lindström, A.
Chapter: 5 (Page no: 57) Comments on Cycas, Dyerocycas and Epicycas (Cycadaceae). Author(s): Chen ChiaJui Hill, K. D. Stevenson, D. W.
Chapter: 6 (Page no: 69) Classification concepts in Encephalartos (Zamiaceae). Author(s): Vorster, P.
Chapter: 7 (Page no: 85) Classification concepts in Macrozamia (Zamiaceae) from Eastern Australia. Author(s): Forster, P. I.
Chapter: 8 (Page no: 95) Classification concepts in Ceratozamia (Zamiaceae). Author(s): Whitelock, L. M.
Chapter: 9 (Page no: 109) Relationships and phytogeography in Ceratozamia (Zamiaceae). Author(s): Vovides, A. P. Pérez-Farrera, M. A. González, D. Avendaño, S.
Chapter: 10 (Page no: 127) A morphometric analysis of the Ceratozamia norstogii complex (Zamiaceae). Author(s): Pérez-Farrera, M. A. Vovides, A. P. Hernández-Sandoval, L. González, D. Martínez, M.
Chapter: 11 (Page no: 137) Hypotheses on the relationship between biogeography and speciation in Dioon (Zamiaceae). Author(s): Gregory, T. J. Chemnick, J.
Chapter: 12 (Page no: 149) Molecular phylogeny of Zamia (Zamiaceae). Author(s): Caputo, P. Cozzolino, S. Luca, P. de Moretti, A. Stevenson, D. W.
Chapter: 14 (Page no: 173) Zamiaceae of Bolivia, Ecuador and Peru. Author(s): Stevenson, D. W.
Chapter: 15 (Page no: 195) In search of the true tree: guidelines for classification. Author(s): Osborne, R. Walters, T.

Chapter details

  • Author Affiliation
  • Environmental Horticulture Department, University of Florida, 1525 Fifield Hall, Gainesville, FL 32611-0670, USA.
  • Year of Publication
  • 2004
  • ISBN
  • 9780851997414
  • Record Number
  • 20043021924