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What looks like a bottle, stores up liquid and has an edible inner bark? The Queensland bottle tree. Shaped like a sturdy wine bottle, these trees are often left standing when undergrowth is cleared away for farming. While not a perfect source, Bottle trees have long been considered an emergency source of sustenance. Bottle trees are often left in fields where cattle are being grown. The leaves can serve as an emergency fodder. In times of extreme drought, farmers have even felled whole trees for cattle. When the outer bark is peeled back, it exposes a soft, edible inner bark. Unfortunately, the pulp is a good source of energy but doesn’t provide much in the way of protein. Some cattle fed on it have developed Nitrate poisoning. The native people who lived in Australia before the Europeans sometimes ate the roots of the young plants or scored the sides of the trees and ate the secretions from them. They used the fiber to make nets. Source: www.designertrees.com.au/queensland-bottle-tree-drink-foo...

Aboriginal people made use of the trees by eating the roots of young plants and by consuming secretions from the trunk that were induced by wounds.[36] Fibre obtained from the species was used to make nets.[37] The leaves have also been used for fodder,[36] and Queensland farmers often leave bottle trees as a potential food source when land is cleared.[3] During drought conditions, whole trees have been felled to feed stock. The soft edible pulp inside the trunk is exposed by removing the bark.[36] The pulp is energy-rich but protein-poor, and occasional cases of nitrate poisoning have led to cattle deaths. Source: en.wikipedia.org/wiki/Brachychiton_rupestris#:~:text=The%....