Species Delimitation in Tetraploid, Apomictic Amelanchier (Rosaceae)

@article{Cushman2017SpeciesDI,
  title={Species Delimitation in Tetraploid, Apomictic Amelanchier (Rosaceae)},
  author={Kevin R. Cushman and Michael B. Burgess and Eric T. Doucette and Gretchen A. Nelson and Christopher S Campbell},
  journal={Systematic Botany},
  year={2017},
  volume={42},
  pages={234 - 256}
}
Abstract Diversification in Amelanchier tetraploid apomicts differs from that of diploid sexuals and produces groups that are taxonomically difficult. Apomixis facilitates expansion of ecologically successful genotypes into numerous, narrowly distributed, and often minimally distinct microspecies. Residual sexuality in tetraploids creates hybrid swarms and intergradation of taxa. This gene flow is evident in DNA sequences from nuclear and chloroplast regions that record mostly allotetraploid… CONTINUE READING

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