R. crocea

R. crocea may refer to:


 * Ramariopsis crocea, a coral fungus
 * Rhamnus crocea, an evergreen shrub
 * Rhodotorula crocea, a pigmented yeast
 * Romulea crocea, a flowering plant
 * Rostanga crocea, a sea slug
 * Russula crocea, a mycorrhizal fungus