Cardamine lojanensis, a new Ecuadorian species from Loja Province, is
described and illustrated. Its relationship to the nearest South Ameri
can species is discussed. During preparation of the Brassicaceae for t
he Catalogue of the Vascular Plants of Ecuador, a loan of Cardamine fr
om AAU was studied. It included four specimens of a species that did n
ot match any of the known South American members. The new species. C.
lojanensis, is named after Loja Province, from which it was collected.