This sighting Elaeocarpus bancroftii (Kuranda quandong, ebony heart, Johnstone River almond) of my own shows old weathered examples from the forest floor, of these hard woody nuts which have earlier been chewed open and the seeds inside eaten out – most likely by the indigenous (ie. incl. meaning native to Au) huge white-talied rats.
Yes really so special trees ! Which have: • matt–green coloured large ripe fruits (ca. 4–5cm diameter with edible flesh inside the skin, around the woody nut), • really hard woody, four-sided, nuts inside this flesh, and • white seeds (edible) inside these nuts, which have, thin but tough, brown 'skins' (testa) surrounding and protecting them .
These above photographs show my own careful, from much experience, cracking of these nuts for the purposes of these clear photographs of both these nuts and these intact seeds and the one split in half seed retained inside the nut, including the seeds' white colour and the intact brown 'skins' (botanical term: testas) surrounding the seeds .
I suggest all visit Yalanji Bubu [Country] in Mossman Gorge including the indigenous cultural walks, in which these fruits, their nuts and seeds and the ancient nut cracking rocks feature. Hence, you will learn first hand highest quality information about these (far and away high quality (compared to third hand demagoguery wikipedia).)
It's interesting to read on Wikipedia how animals such as Cassowaries, Spectacled Flying-foxes and Giant White-tailed Rats eat them in different ways, and how Indigenous people use "nut stones" to crack them open! https://en.wikipedia.org/wiki/Elaeocarpus_bancroftii