Portulaca sclerocarpa is a rare species of flowering plant in the purslane family known by the common names 'ihi makole and po`e. It is endemic to Hawaii, where it is known only from the island of Hawaii and an islet off of Lanai. Ten occurrences exist for a total of over 1000 individuals. It is a federally listed endangered species of the United States. This is a perennial herb with short, woody branches growing up to about 20 centimeters long. It produces white, pink, or bicolored flowers. The plant grows on cinders and lava substrates.