P. longifolia may refer to: Persoonia longifolia, the long-leaf persoonia or snottygobble, a small tree species found in Western Australia Physalis longifolia, the common groundcherry, a plant species native to North America Pinguicula longifolia, the long-leaved butterwort, a perennial carnivorous sub-alpine plant species found in the Central Pyrenees Polyalthia longifolia, a synonym of Monoon longifolium, the false ashoka, a small tree species native to southern India and Sri Lanka Potentilla longifolia, a plant species found in Russia and Mongolia Pulmonaria longifolia, the narrow-leaved lungwort, a plant species native to western Europe