BioStor
 | A botanical survey of the Galapagos Islands Alban Stewart (1911) Proceedings of the California Academy of Sciences 1: 7-288 |
 | Composition, Origin, and Affinities of the Madagascan Vascular Flora Jean-F Leroy (1978) Annals of the Missouri Botanical Garden 65: 535-589 |
 | A biosystematic revision of Bommeria C H Haufler (1979) Journal of the Arnold Arboretum 60: 445-476 |