From Smithsonian Despite the barrier, a number of species have become successfully established over the entire length of the Peruvian and Atacama deserts, such as Apium (Ciclospermum) laciniatum, Encelia canescens, Chenopodium petiolare, Mirabilis prostrata and Loasa urens. Alstroemeria paupercula occurs from Caldera in Chile to Chala in south-central Peru. Pasithea coerulea and Fortunatia biflora occur from central Chile to southern Peru. Arnold