The name Adesmia arborea Bertero has been considered a nomen nudum since Colla's assertation that all new names in Bertero's publication detailing his Chilean collections of 1828 were nomina nuda. Subsequent authors seeking to validate the name A. arborea have provided conflicting descriptions adding confusion about the identity of the species. These problems arose from equating this name with other new names published by Bertero in the same work and because material collected and annotated by Bertero as A. arborea represents two different taxa. Here I show that A. arborea was, in fact, validly published by Bertero, provide evidence as to the collection number from which type must be chosen, and designate a Lectotype and Isolectotypes.
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Vol. 22 • No. 1