C. roseus

C. roseus may refer to:
 * Carpodacus roseus, the Pallas's rosefinch, a bird species
 * Catharanthus roseus, the Madagascar periwinkle, a plant species endemic to Madagascar
 * Cotoneaster roseus, a plant species native to portions of the Himalayas, Iran, northern and western Pakistan, northwest India and Kashmir

Synonyms

 * Cryptochilus roseus, a synonym for Eria rosea, a plant
 * Clastes roseus, a synonym for Peucetia viridans, the green lynx spider