''Delissea argutidentata'' is a species of flowering plant in the Hawaiian lobelioids section of the Campanulaceae family, native to

Hawaii (island) Hawaii ( ; haw, Hawaii ) is the List of islands of the United States by area, largest island in the United States, located in the U.S. state, state of Hawaii. It is the southeasternmost of the Hawaiian Islands, a chain of High island, volcanic ...

. The species was long thought to be extinct, but in March 2021 three individuals were discovered growing in an undisclosed location on the Big Island of Hawaii, and efforts are underway to use their seeds to re-establish the species elsewhere. ''Delissea argutidentata'' can grow up to 35 feet tall, which is much taller than other species in the Campanulaceae. The plants have a palm-like trunk topped by a round cluster of simple leaves. They previously inhabitated the bottoms and slopes of old volcanic craters and could be found in the understory of '' Acacia koa'' forests.

References

Lobelioideae Endemic flora of Hawaii Plants described in 1959 {{Campanulaceae-stub