[Wikipedia] Ecology: Similar to some other species of Trigynobathys, H. mutilum grows in moist or muddy habitats where its seeds adhere to wading birds. The long-distance migrations of these birds is most likely the method by which the species has been introduced to Central and South America, where in some areas including Mexico and Ecuador the species appears to have been established for a long time. (link added by Mary Ann Machi)