P. dubia

P. dubia may refer to:
 * Partulina dubia, a gastropod species endemic to the United States
 * Phelsuma dubia, the dull day gecko, a diurnal lizard species
 * Praya dubia, the giant siphonophore, a deep sea organism
 * Psychotria dubia, a plant species endemic to Sri Lanka

Synonyms

 * Petrophile dubia, a synonym for Isopogon dubius, a small shrub
 * Prosopis dubia, a synonym for Enterolobium cyclocarpum, the guanacaste, caro caro or elephant ear tree, a legume species