Flower Hibiscadelphus woodii was declared extinct in 2016. However, in April-2019 it was discovered during the study of aerial photographs National tropical garden.
Hibiscadelphus woodii belongs to the family Malvaceae. This plant is endemic to the island of Kauai, grows on steep cliffs near the valley of Kalalau and can reach a height of 2.5−5 meters. For the first time this plant was discovered in 1991, and a new species was described four years later.
Due to the inaccessibility of Kalalau specialists of the National tropical Botanical garden exploring the area with the drone.