immortelle
noun
im·mor·telle ˌi-ˌmȯr-ˈtel 
: everlasting entry 2 sense 3
Example Sentences
Recent Examples on the Web Anja leads me up the stony path, pointing out unruly wild figs and pungent immortelle, its silvery leaves bowing under mops of yellow blossoms. 
Adam Erace, Travel + Leisure, 4 Sep. 2021
Adam Erace, Travel + Leisure, 4 Sep. 2021 Word History
Etymology
French, from feminine of immortel immortal, from Latin immortalis
First Known Use
1832, in the meaning defined above