Hanging, evergreen perennial plant, native to South America; there are numerous species, but generally the most cultivated as houseplants are three: Nematanthus gregarius, N. weittsteinii, N. stigilosus; it was once called Hypocyrta. In nature these plants have epiphytic development; they produce long prostrate stems, which reach 40-50 cm in length, fairly branched and flexible; the leaves are small, 3-4 cm long, oval, dark green in color, slightly fleshy.
In the summer, from the leaf axil, small slightly fragrant flowers bloom, orange or reddish, of particular shape, slightly swollen, similar to goldfish. Easy-to-grow plants are generally planted in hanging baskets. After flowering it is recommended to shorten the stems slightly, to avoid that the plant tends to undress in the lower part with time.
The plants of Nematanthus gregarius prefer very bright positions, but away from direct sunlight; in summer it is possible to place them outdoors, but during the cold months it is good to grow them in the apartment, with minimum temperatures above 10-12 ° C since, being a plant of tropical origin, it does not bear the low temperatures that would bring the plant of goldfish at rapid death.