C. gracilis

C. gracilis may refer to:
 * Caecilia gracilis, an amphibian species
 * Cancer gracilis, the graceful rock crab or slender crab, a crab species
 * Capsella gracilis, a species of flowering plant
 * Cardioglossa gracilis, a frog species
 * Catocala gracilis, the graceful underwing, a moth species
 * Chapmannia gracilis, a legume species found only in Yemen
 * Charassognathus gracilis, an extinct cynodontia species
 * Citrus gracilis, the Humpty Doo lime or Kakadu lime, a straggly shrub species found in the Northern Territory, Australia
 * Clarkia gracilis, the slender clarkia, a wildflower species native to California
 * Coccothrinax gracilis, the latanier, a palm species endemic to the island of Hispaniola
 * Coelus gracilis, a beetle species endemic to the United States
 * Coelurus gracilis, a coelurosaur dinosaur species
 * Coluber gracilis, the graceful racer, a snake species found in India
 * Conchoraptor gracilis, an oviraptorid dinosaur species
 * Coniogramme gracilis, a fern species
 * Coursetia gracilis, a legume species found only in Ecuador
 * Cordicephalus gracilis, an extinct prehistoric frog species
 * Crania gracilis, a brachiopod species in the genus Crania
 * Cricosaurus gracilis, an extinct marine crocodyliform species
 * Crocodilichthys gracilis, the lizard triplefin, a fish species
 * Cryptotis gracilis, the Talamancan small-eared shrew, a mammal species
 * Cynosurus gracilis, a grass species in the genus Cynosurus

Synonyms

 * Callitris gracilis, a synonym for Callitris preissii, a conifer species found only in Australia