''Costularia cadetii'' is a
perennial herb
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widel ...
that grows near the rim of
volcanoes in
Réunion
Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island ...
, which is located to the east of
Madagascar in the
Indian Ocean.
It was discovered in 1965 but more evidence was required: it was named ''Costularia cadetii'' after its collector, Thérésian Cadet, in 2019. It is also an endangered species because of many factors such as volcanic eruptions, climate change, and fire.
References
Plants described in 2019
Cyperaceae
Flora of Réunion
{{Cyperaceae-stub