On the evolutionary origins of the cacti

@inproceedings{Hershkovitz1997OnTE,
  title={On the evolutionary origins of the cacti},
  author={Mark A. Hershkovitz and Elizabeth A. Zimmer},
  year={1997}
}
Understanding evolutionary responses of plants to desert environments depends upon phylogenetic knowledge of desert plants. The diverse American desert family Cactaceae has been presumed, on the basis of distinctiveness, to be phylogenetically isolated and relatively ancient (> 65 million years old). Using maximum likelihood and parsimony analyses of the rapidly evolving internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA (nrDNA), we show that the cacti are phylogenetically… CONTINUE READING

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