1) Caryophylloid dicot genus 2) Genus pisonia 
Pisonia is a genus of flowering plants in the four o`clock flower family, Nyctaginaceae. It was named for Dutch physician and naturalist Willem Piso (1611-1678). Certain species in this genus are known as catchbirdtrees, birdcatcher trees or birdlime trees because their sticky seeds reportedly trap small birds. Such sticky seeds are postulated to....
[n] - genus of often thorny tropical trees and shrubs and some vines
genus Pisonia noun genus of often thorny tropical trees and shrubs and some vines; mainly America