 However, the species with white flowers ("S. candidus, S. integrifolius" and "S. lacteus") are pollinated by moths, and "Schizanthus grahamii" is pollinated by hummingbirds (such as, for example, "Oreotrochilus leucopleurus").Although the great majority of Solanaceae exhibit poricidal pollen dehiscence, the bee-pollinated species in this genus use explosive dehiscence which is triggered when an insect lands on a flower; this ensures that the insect is covered in pollen.This mechanism favours cross pollination (allogamy or xenogamy) in these plants.