Uncarina is a genus of 12 species occurring in northern, western and southwestern Madagascar.
U. stellulilifera is common between limestone rocks in the Tulear region, between Morondava in the north and Lake Tsimanampetsotse in the south.
It is a small tree up to 3.5 m tall, with a thickened base and leaves 4-12 cm long and 3-10 cm wide. The beautiful flowers are 5-6 cm long.
The fruits are most peculiar with their very long barbed spines, which attach them to passing animals as an aid in dispersal. We were told that the local people use the fruits to catch mice.