Alula, also known as Haha, Olulu, Pu Aupaka, and Cabbage on a Stick, is one of the rarest plants in the world. It is only found in the wild on a few select cliffs on Kauai and Niihau in Hawaii. Because its natural pollinator has become extinct, botanists have begun hand-pollinating the last remaining individuals. While these plants are found in nurseries and botanical gardens today, they remain a rare and protected species in the wild.