P. gracilis

P. gracilis may refer to:
 * Pachyaena gracilis, an extinct mammal species in the genus Pachyaena
 * Palaeospheniscus gracilis, an extinct penguin species
 * Pandercetes gracilis, the lichen huntsman spider, a spider species found in Australia
 * Panulirus gracilis, a lobster species in the genus Panulirus
 * Paradoxides gracilis, a trilobite species
 * Paraprotopteryx gracilis, an extinct enantiornithine bird species of the Early Cretaceous
 * Pearcea gracilis, a plant species endemic to Ecuador
 * Penstemon gracilis, the slender beardtongue, a wild flower species of the genus Penstemon found in Minnesota
 * Petaurus gracilis, the mahogany glider, an endangered possum species
 * Phlox gracilis, the slender phlox, a plant species
 * Physalaemus gracilis, a frog species
 * Plasmodium gracilis, a parasite species
 * Plectomyces gracilis, a fungus species
 * Pleurothallis gracilis, an orchid species endemic to Brazil
 * Polygonia gracilis, the hoary comma, a butterfly species common in boreal North America
 * Polyscias gracilis, a plant species endemic to Mauritius
 * Potentilla gracilis, the slender cinquefoil or graceful cinquefoil, a plant species
 * Pouteria gracilis, a plant species endemic to Peru
 * Pradhania gracilis, a dinosaur species from the Early Jurassic
 * Prinia gracilis, the graceful prinia, a small warbler species
 * Protodiplatys gracilis, an extinct earwig species
 * Pseudomyrmex gracilis, the elongate twig ant, an ant species
 * Pugettia gracilis, the graceful kelp crab, a crab species

Synonyms

 * Palene gracilis, a synonym for Thallarcha sparsana, a moth found in Victoria, New South Wales and Queensland