C. occidentalis may refer to: plant Calyptronoma occidentalis, a palm species endemic to Jamaica Canna occidentalis, a garden plant Carex occidentalis, a sedge species Celtis occidentalis, the common hackberry, a tree species native to North America Cephalanthus occidentalis, the buttonbush, a flowering plant species native to eastern and southern North America Cercis occidentalis, the western redbud, a tree native to western North America animal Crenadactylus occidentalis, tiny gecko species native to Western Australia See also List of Latin and Greek words commonly used in systematic names