P. spinosa may refer to: * Paa spinosa, a frog species * Pallenis spinosa, a flowering plant species in the genus Pallenis * , an extinct Cambrian arthropod species in the genus Panlongia * Phylloxylon spinosa, a legume species * , a jumping spider species in the genus Pochyta * Prostanthera spinosa, a mintbush species in the genus Prostanthera * , a predatory marine worm species in the genus * Prunus spinosa, a deciduous large shrub species * Pseudomonas spinosa, a Gram-negative soil bacterium species * , a sac spider species in the genus Pteroneta * Pultenaea spinosa, a flowering plant species in the genus Pultenaea * Pyrenecosa spinosa, a wolf spider species in the genus Pyrenecosa