This cane-like Begonia derives its name from amphi, meaning two ways, and oxys, meaning sharp.  It refers to the strange leaves being pointed at two ends.  It is native to only two limestone hills in Sabah (Batu Punggul and Tinahas).  Leaves are edged in a reddish-purple and covered in red dots which are subtly raised at the center.  Mature leaves have a slightly undulated edge, but new leaves are more dramatically undulated with a yellow leaf underlying the red dots.  This can be a finicky species, but usually does quite well in terrarium conditions.

The last photo is representative of the plants available. They are well rooted and shipped meticulously in their pots.