Phylogenetics and population structure of the western North American endemic Pacific Laurasian clade of Isoëtes.

Abstract excerpt

PREMISE: Isoëtes is a genus of small, semi-woody, hydrophilic, heterosporous lycophytes with a cosmopolitan, global distribution. However, local populations tend to be found in narrow, patchy, and highly fragmented mesic to aquatic habitats, many of which are currently under threat. In this study, we sought to uncover how this patchy distribution has affected the evolutionary history of one of the two lineages of...

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