Piñones-Tapia D., Guerra P. C., Touret A., Gutiérrez G. O., Pizarro-Araya J., Gianoli E., Effects of water availability on floral traits and pollinators in a columnar cactus endemic to the Atacama Desert, Chile, Journal of Plant Research, 2025, 138(5):745-759, doi: 10.1007/s10265-025-01655-3
The abstract describes a comparison of three Eulychnia breviflora populations along an aridity gradient and a field experiment adding water in a dry year. It presents variation in flower size, the number of flowers displayed simultaneously and phenology. Irrigation increased seed number, with similar fruit set.