C. officinalis
# C. officinalis

C. officinalis may refer to:

* Calendula officinalis, a garden plant species
* Cinchona officinalis, a tree species native to the Amazon Rainforest
* Cochlearia officinalis, a flowering plant species
* Corallina officinalis, a calcareous red seaweed species
* Cyathula officinalis, a plant species native to the China
