Sandbox trees can grow to 60 metres (200 ft),[4] and its large ovate leaves grow to 2 feet (0.61 m) wide. They are monoecious, with red, un-petaled flowers. Male flowers grow on long spikes, while female flowers grow alone in axils. The sandbox tree's fruiting bodies are large capsules which can explode when ripe, splitting into segments and launching seeds at 70 metres per second (160 mph).[5] One source states that ripe capsules catapult their seeds as far as 100 metres (330 ft).[6] Another source states that seeds are thrown as far as 45 metres (148 ft) from a tree, averaging about 30 metres (98 ft).[4] The sandbox tree's explosive fruit has led to an additional nickname: the dynamite tree.

Its fruits are pumpkin-shaped capsules, 1.4–2 inches (3–5 cm) long, 2–3.2 inches (5–8 cm) diameter, with 16 carpels arranged radially. Its seeds are flattened and about 0.8 inches (2 cm) diameter.
https://en.wikipedia.org/wiki/Hura_crepitans