paragraph_text: B. fistulosa živi s jednom vrstom mrava Tetraponera aethiops,<ref>Ecology Daniel H. Janzen; Protection of Barteria (Passifloraceae) by Pachysima ants (Pseudomyrmecinae) in a Nigerian rain forest  dok B. nigritana živi s nekoliko mravljih vrsta.<ref>ScienceDirect.com - Acta Oecologica Champlain Djiéto-Lordon, Alain Dejean, Marc Gibernau, Martine Hossaert-McKey, Doyle McKey: Symbiotic mutualism with a community of opportunistic ants: protection, competition, and ant occupancy of the myrmecophyte Barteria nigritana (Passifloraceae)