Hibiscus flowers are an iconic symbol of tropical resorts worldwide but some are rather rare. Hawaii's State Flower, Hibiscus brackenridgei, is an endangered species.
Everyone knows of the Hawaiian hibiscus but few are aware of an equally beautiful and intriguing related group of plants known as Hibiscadelphus- literally "brother of Hibiscus".
Brother of Hibiscus is highly endangered. Until recently only one of the seven previously known species remained in its natural habitat, the other having gone extinct. These trees are only known, or were known, from five of the eight main Hawaiian Islands. Two are still alive in cultivation, saved in part because of their beautiful showy blossoms. Several were only known from a single wild tree.