BIOSYSTEMATIC Christopher H . Haufier , 2 ANALYSIS OF Michael D . Windham 2 ' 3 and


The allotetraploid Cystopteris tennesseensis and its putative diploid progenitors, C. bulbifera and C. protrusa, constitute the C. tennesseensis complex. Although previous studies provided evidence of morphological, ecological, and chromosomal differences among the members of this complex, puzzling morphological variability precluded consistent… (More)

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