What distinguishes this species as a Sloanea is obviously the spiny fruit. However, the leaves do have swellings on both the base of the leaf stalk and where the lamina starts, which is quite typical of some Elaeocarpaceae. I was pretty surprised at the size of the leaves and fruits of this Sloanea. The leaves are only about 10cm or slightly longer and the fruits are only about 2cm long including the spines.
About David Tng
I am
David Tng, a hedonistic botanizer who pursues plants with a fervour. I chase the opportunity to delve into various aspects of the study of plants. I have spent untold hours staring at mosses and allied plants, taking picture of pollen, culturing orchids in clean cabinets, counting tree rings, monitoring plant flowering times, etc. I am currently engrossed in the study of plant ecology (a grand excuse to see 'anything I can). Sometimes I think of myself as a shadow taxonomist, a sentimental ecologist, and a spiritual environmentalist - but at the very root of it all, a "plant whisperer"!
Leaf Whispering in the Tropics 