Rutaceae Juss.
Phebalium filifolium Turcz. - Phebalium maxwellii (F.Muell.) Engl. , [n/a], intergrade
Wilson, Paul G. (10 December 1970), A taxonomic revision of the genera Crowea, Eriostemon and Phebalium (Rutaceae). Nuytsia 1(1): 68-69 BHL [primary reference]