C. glauca may refer to: Canna glauca, a plant species native to the wetlands of tropical America Casuarina glauca, the swamp she-oak, a plant species native to the east coast of Australia Citrus glauca, the desert lime, a thorny shrub species endemic to semi-arid regions of Australia Coronilla glauca, the sea-green or day-smelling coronilla, a small evergreen shrub species native to the Mediterranean region Cyathea glauca, a tree fern species endemic to Réunion
Synonyms Carex glauca, a synonym for Carex flacca, an ornamental sedge species native to Europe and North Africa
See also Glauca (disambiguation)