C. macrocarpa

C. macrocarpa may refer to:
 * Carissa macrocarpa, the Natal plum, a shrub native to South Africa
 * Clinosperma macrocarpa, a palm tree species found in New Caledonia
 * Cupressus macrocarpa, the Monterey cypress, a tree species, known simply as macrocarpa in Australia and New Zealand