Ficus deltoidea, commonly known as mistletoe fig (mas cotek in Malaysian, tabat barito in Indonesia, or สาลิกาลิ้นทอง in Thai) is a species of flowering plant in the family Moraceae, native to Southeast Asia, and widely naturalized in other parts of the world. Description F. deltoidea is an evergreen shrub or small tree, growing up to about 2 m tall, with thick leaves that are deltoid in shape, rounded at the apex and tapering at the base. The upper surface of the plants' leaves are dark, shining green, while the lower surface is golden yellow with black spots. Male and female plants are physically distinctive, with the leaves of female plants being big and round, while the leaves of male plants are small, round and long. F. deltoidea can grow on the land (terrestrial plant), on the stone (Lithophyte) or attach to other plants as epiphyte. The plant grows wild in eastern peninsular Malaysia (Kelantan, Terengganu), Sumatra, Java, Borneo (Sabah, Sarawak, Brunei and Kalimantan), Celebes, Palawan and in Mindanao and is used by the traditional medical practitioners in these regions. Taxonomy C.C. Berg in his publication in Blumea classified F. deltoidea into two sub species based on difference of the leaf shape, subsp. deltoidea and subsp. motleyana (Miq.) C.C. Berg. F. deltoidea subsp. deltoidea has board leaf shape variation from obtriangular to linear-oblanceolate, include apex and based on lamina variation in the common deltoid shape with furcate midrib. F. deltoidea subsp. motleyana has oblong to lanceolate lamina shape with pinnately vein. The first subspecies with deltoid leaf shape is a common taxa to be used as medicinal plant. Lee et al. (2016) success to conduct molecular analysis with cpDNA and nSSR marker system for F. deltoidea from Peninsular Malaysia and the result support taxonomy classification based on morphological traits. Uses Ficus deltoidea is used as an ornamental plant, requiring the protection of glass during winter months, in zones where the temperature falls below . It requires a sunny, sheltered, south- or east-facing position. In the UK it is a recipient of the Royal Horticultural Society's Award of Garden Merit. The plant is used in traditional medicine in eastern Peninsular Malaysia and Borneo, where its leaves, fruits, stems and roots are believed to have healing properties. Among the traditional uses attributed to this plant include menstrual cycle regulation; the treatment of post-partum depression, lung diseases, high blood pressure, diabetes, and skin problems;