Martínez-Peralta C., Martínez-Zavala A., Flower biology of the cactus Coryphantha elephantidens in the tropical dry forest of Central Mexico, Plant Species Biology, 2021, 36(1):102-113, doi: 10.1111/1442-1984.12303
Flower biology and the breeding system of Coryphantha elephantidens in the dry tropical forest of Morelos. It combines phenology, flower measurements, pollen presence, self-pollination, cross-pollination and bee observations. It documents functionally female flowers, protandry, herkogamy and dependence of fruit set on cross pollen in the population studied.