Jackfruit

Thanks. I thinks A.heterophyllus could be the thing.

Finally found one that looks the same. http://www.projectnoah.org/spottings/204406007

Well, I have not seen jack fruit tree with three lobed leaves. On internet search, it does have at least one picture with three lobes that looked like the one I took a picture of (http://www.cloudforest.com/cafe/forum/37849.html). If you zoom in, you will find that the young leaf stem is hairy. Not sure if A.heterophyllus have such characteristic.

Thanks. It does look like Sassfras. However, looking at the shape of the leaves, it seems that the tip of the above plant is pointed contrary to Sassfras. I looked at S.tuzumu and noticed that the tip tippers but not extended. Also the region seems to be outside of America and South Asia. I cannot find a single reference in the local resources. Since it grows in a Natural Reserve, it must be a native specie.