New combination in Astragalus (Fabaceae)

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Abstract:

Recent molecular phylogenetic analyses have established that the four varieties of Astragalus cusickii are three distinct, monophyletic clades: A. cusickii var. cusickii and A. cusickii var. flexilipes form one clade, A. cusickii var. sterilis and A. cusickii var. packardiae each form the other two. Although relationships among the clades in the analyses are poorly resolved, they are also poorly resolved with respect to other recognized species in the genus. Morphological data provide unique synapomorphies for each of the clades and therefore we propose to recognize three distinct species, with A. cusickii var. flexilipes retained at the rank of variety. A new combination brings A. cusickii var. packardiae to species rank, as Astragalus packardiae (Barneby) J.F. Sm. & Zimmers, comb. nov., whereas A. sterilis has already been published.

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Reference Code: A17SMI01IDUS <br>

Full Citation: Smith, James F., Jay C. Zimmers. 2017. "New combination in Astragalus (Fabaceae)." Phytoneuron 2017-38: 1-3. <br>

Location: ELECTRONIC FILE - BOTANY: PLANT SPECIES: {Astragalus packardiae} <br>

Keywords: Astragalus cusickii, Astragalus cusickii var. cusickii, Astragalus cusickii var. flexilipes, Astragalus cusickii var. sterilis, Astragalus cusickii var. packardiae, Astragalus packardiae (Barneby) J.F. Sm. & Zimmers, comb. nov. <br>