P. hastata may refer to: Pavonia hastata, Cav., a plant species in the genus Pavonia Phacelia hastata, the silverleaf scorpion-weed, a plant species Populus hastata, a synonym for Populus trichocarpa, a tree species Prosthechea hastata (Lindl.) W.E.Higgins (1997 publ. 1998), an orchid species in the genus Prosthechea
See also Hastata (disambiguation)