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1 Tree was published in this study

Phylogenetic placement and biogeography of the North American species of Valerianella (Valerianaceae: Dipsacales) based on chloroplast and nuclear DNA.
Bell. (2007). Mol Phylogenet Evol.
Valerianella locusta Fedia cornucopiae Valerianella pumila Valerianella coronata Valerianella vesicaria Valerianella eriocarpa Valerianella dentata Valerianella carinata Valerianella microcarpa Valerianella amarella Valerianella radiata Valerianella texana Valerianella umbilicata Valerianella stenocarpa Valerianella florifera Valerianella muricata Valerianella discoidea
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