History of the Arctic Flora in North America

Those genetic data make up this Arctic Flora dataset. From the genetic sequence data, gene trees are being reconstructed and used to estimate the patterns and timing of divergence, test which geologic and climatic events most impacted divergence, and infer how the process of genetic divergence differed between Arctic and alpine tundra refugia. The data is archived in nexus files - the standard format for aligned sequence data ready to be used in a phylogenetic analysis.

The files are separated by taxon and genetic locus within a given taxon. The nexus format provides details on the data type (DNA), number of samples, and length of sequence. Within a file, all the sequences are aligned but not interleaved, such that the 'sample name' is followed by the entire sequence for that sample.

All the specimens that were collected are archived and publicly accessible in the Western Washington University Herbarium.