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Myrcianthes ferreyrae (McVaugh) McVaugh, "arrayan" is an endemic and threatened tree of the “lomas” formations of south Peru. We evaluated their conservation status between March 2011 to August 2012; for which, all individuals were counted in its distributional range known (Atiquipa, Taymara and Chala Viejo hills in the Province of Caraveli, Arequipa). We established 9 plots of 0.25 hectares, three in each locality; in each plot we obtained data of all trees greater than 10 cm basal diameter, plus mortality parameters, its natural regeneration and presence of disturbances. Myrcianthes ferreyrae has a population of 586 individuals, its diameter distribution shows a bell form, the most common category mortality was logging; the natural regeneration was 33.12%, all belonging to the Atiquipa hills. We conclude that M. ferreyrae is strongly threatened, formed by adult individuals and with little natural regeneration. In management of M. ferreyrae should be considered its fragility and the problems it has for its regeneration.

Estado de conservación de Myrcianthes ferreyrae un árbol endémico de las lomas costeras del sur del Perú