Great things are happening at the Cairns Botanic Gardens Gondwana gardens, and for me great things could mean small Annonaceous flowers, such as this one – Pseuduvaria froggattii. It’s an interesting name, with ‘frog’ in it. It’s also endemic to the wet tropics, occurring in lowland rainforest from Mowbray River to Cape Tribulation.
The flower was scarcely a centimetre across but it had all the characteristics of a Custard Apple family type floral blossom – wiz, the floral parts were in threes, 3 petals and 3 sepals. The petals also form this chamber, presumably as a nuptial chamber for small beetles that will pollinate the species. Being an ancient lineage of plants, members of the Annonaceae are known to be pollinated by equally ancient lineages of insects! The flowers and fruits are borne on both the trunk and the branches, phenomena known as cauliflory and ramiflory respectively. These phenomena, particularly the former, are very characteristically tropical.
Cauliflorus flowers
Leaf Whispering in the Tropics 
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Any idea how I can purchase several of these to grow in Kuranda?
Hey Steve, You could probably try the Yuruga Nursery. I cannot say for sure that they will have it buut its worth a look.