Martínez-Peralta C., Molina-Freaner F., Golubov J., Vázquez-Lobo A., Mandujano M. C., A Comparative Study of the Reproductive Traits and Floral Morphology of a Genus of Geophytic Cacti, International Journal of Plant Sciences, 2014, 175(6):663-680, doi: 10.1086/676302
Comparison of flower structure and activity in seven Ariocarpus species, with measurements of 216 flowers and pollination experiments. It covers herkogamy, overlap of male and female phases, pollen and ovule production, fruit set and seed production. Each species was represented by one population. Pollination data partly overlap with separate publications on self-incompatibility and reproductive ecology.