P. aspera may refer to: Paralomis aspera, a species of king crab Patella aspera, a species of limpet in the family Patellidae Petrophile aspera, a species of flowering plant in the family Proteaceae Pipa aspera, the Albina Surinam toad, a species of frog in the family Pipidae Pomaderris aspera, hazel pomaderris, a species of flowering plant in the family Rhamnaceae Protea aspera, the rough leaf sugar bush, a species of flowering shrub in the family Proteaceae Pseudaneitea aspera, a species of land slug in the family Athoracophoridae Pterostylis aspera, the rough shell orchid, a species of orchid