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Arnaldoa argentea (Barnadesioideae: Asteraceae), a new species and a new generic record for ecuador

Abstract:

A new species of Asteraceae, Arnaldoa argentea C. Ulloa, P. Jørgensen & M. O. Dillon, from southern Ecuador is described and illustrated. It is characterized by its cream-white to light orange corollas and red-brown phyllaries covered by a dense silvery pubescence, especially on the adaxial surface. The genus was previously known only from northern Peru. A key to the species of Arnaldoa is presented.