
Cacti Evolve at Lightning Pace: Flower Shape Shifts Drive Speciation
New research analyzing flower traits across more than 750 cactus species finds that the speed of flower shape change, not flower size or pollinator specialization, best predicts the formation of new species. Cacti with rapidly evolving flowers are more likely to diversify, challenging Darwin's idea that specialized flowers drive speciation, and highlighting deserts as dynamic engines of evolution. The work accompanies the Open Access CactEcoDB database and underscores incorporating evolutionary pace into conservation planning as climates shift.
