Euphorbia grandicornis (Cow's Horn) is a succulent shrub with erect, green, 3- to 4-winged branches with a zigzag pattern and paired …
Derivation: A New Latin adjective
Whereas the generic name must be unique, there are often two or more genera with the same specific epithet. The same epithet can also be used within a species for subspecies, varieties, and forms.
Here is a full list of succulents with this epithet. Click on the photo or the name of the plant for which you wish to see further information.