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A review of research on the cycad genus Ceratozamia brongn. (Zamiaceae) in Mexico
TLDR
The low level of divergence of ITS sequences among taxa to the north of the Trans-Mexican Neovolcanic mountain range suggests a pattern of recent, and perhaps rapid, speciation.
Allozyme variation in the three extant populations of the narrowly endemic cycad Dioon angustifolium Miq. (Zamiaceae) from North-eastern Mexico.
TLDR
Dioon angustifolium presents high levels of genetic diversity compared with other cycad species, in spite of small population sizes, and the recent bottleneck effect did not effectively reduce the genetic variation to the extent of eliminating these populations.
A new species of Ceratozamia (Zamiaceae) from Tabasco and Chiapas, Mexico
Ceratozamia becerrae sp. nov. is described and illustrated. This species from Tabasco and Chiapas has affinity with C. miqueliana H. Wendl. from Veracruz and Chiapas, but differs in morphology and
SPATIAL DISTRIBUTION, SURVIVAL, AND FECUNDITY OF DIOON EDULE (ZAMIACEAE) IN A TROPICAL DECIDUOUS FOREST IN VERACRUZ, MEXICO, WITH NOTES ON ITS HABITAT'
A natural habitat of the cycad Dioon edule Lindl. in central Veracruz, Mexico is described. Prolonged drought periods and fire are factors contributing to seedling death resulting in a population
CAM‐cycling in the cycad Dioon edule Lindl. in its natural tropical deciduous forest habitat in central Veracruz, Mexico
TLDR
It was concluded that D. edule is a C3 plant that shows CAM-cycling metabolism when water stressed, and the diel total titratable-acid fluctuation values, although variable, were found to be consistent and significant for the dry season.
Low Intralineage Divergence in Ceratozamia (Zamiaceae) Detected with Nuclear Ribosomal DNA ITS and Chloroplast DNA trnL-F Non-coding Region
TLDR
The molecular phylogeny of Ceratozamia revealed three main clades, which allow for biogeographic interpretations, and the most basal clade suggests a probable ancestral geographic area for CeratoZamia in Southeast Mexico.
Diversity and genetic structure of the Mexican endemic epiphyte Tillandsia achyrostachys E. Morr. ex Baker var. achyrostachys (Bromeliaceae).
TLDR
The genetic structure of populations of T. achyrostachys suggests that habitat fragmentation has reduced allelic richness and genetic diversity, and increased significant genetic differentiation between populations.
Heterozygote excess in ancient populations of the critically endangered Dioon caputoi (Zamiaceae, Cycadales) from central Mexico
TLDR
The results support recent findings that rare plant species maintain high levels of genetic diversity and the heterozygote excess found at all loci is discussed in detail from a neutral evolutionary perspective.
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