Nestotus and Toiyabea, two new genera of Asteraceae: Astereae from the western United States and Canada

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Nestotus is described as a new ditypic genus from the western United States and the Yukon Territory, Canada, to accommodate Stenotus macleanii (Brandegee) A. Heller and Stenotus stenophyllus (A. Gray) Greene, resulting in two new combinations N. macleanii and N. stenophyllus Sequence-based phylogenetic investigations consistently demonstrate and robustly support the relatedness of these two taxa and their distinctiveness from the type species, S, acaulis (Nutt.) Nutt., and other taxa placed in Stenotus. Toiyabea is described as a monotypic genus from Nevada to accommodate Tonestus alpinus (L.C. Anderson & S. Goodrich) G.L. Nesom & D.R. Morgan, resulting in the new combination Toiyabea alpina. This species, Petradoria, plus S. acauli.s and S. armerioides Nutt. constitute a well-supported polytomy sister to Solidago and related taxa in our molecular-based phylogeny.

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Reference Code: A05ROB01IDUS <br>

Full Citation: Roberts, R. P., L. E. Urbatsch, L. E. Urbatsch, and K. M. Neubig. 2005. Nestotus and Toiyabea, two New genera of Asteraceae: Astereae from the western United States and Canada. Sida, Contribution in Botany 21(3): 1647-1655. <br>

Location: ELECTRONIC FILE - BOTANY: OTHER <br>