Our Genetics in a Bottle Project is helping to understand the genetic diversity of one of Australia’s rarest trees, the Ormeau Bottle Tree (Brachychiton sp. Ormeau). Found only in the upper Pimpama River catchment in south-east Queensland, this Critically Endangered species is under significant pressure from habitat loss and potential hybridisation with related species. By understanding the species’ genetic blueprint and connectivity between populations, the project will guide recovery actions and inform potential ex situ conservation measures.
Utilising funds from a private donor, the Australian Seed Bank Partnership engaged the Brisbane Herbarium to conduct comprehensive genetic testing of all known populations in 2025, with a focus on three key sites in the catchment. This work is supported by our community partner, North East Albert Landcare Group, whose volunteers are providing vital in-kind support by collecting leaf samples in the field. These samples will be analysed using advanced genetic techniques to assess gene flow, population structure and the extent of hybridisation with neighbouring Brachychiton rupestris.
The findings from this project will help prioritise seed collection, propagation and planting strategies to maintain the species’ genetic health. By combining community expertise, scientific capability and targeted funding, we are building the evidence base needed to give the Ormeau Bottle Tree its best chance of survival.
🔗 Learn more on our Genetics in a Bottle Project Page