Podocarpus costalis, locally known as Arius, is a species of conifer in the family Podocarpaceae. It is native to the Philippines and Taiwan. This plant is a shrublike tree which grows in island scrub, low forest, and bluff habitat. It is also widely cultivated as a garden plant. It is used in bonsai. The fruit is edible. One threat to the survival of wild populations is overcollecting for horticulture; this practice is illegal throughout its native range.