This Begonia species is from Palawan Island in the Philippines.  It is a nicely colored plant, especially when viewed in bright light.  A pale green mark runs down the middle of the leaf, and around the edges of the leaf is short pale striping.  It is a smaller Begonia species, with leaves that reach around 4-5″.  It grows well as a house plant (as pictured here) so long as it is provided with ample light.  I have grown it in south and east facing windows with success.

The pattern can vary, as shown here between plants grown in different conditions (one as a window plant, the other grown in a terrarium with clay substrate).  It seems tolerant of a wide variety of conditions, and has a sort of ‘creeping’ growth habit that is very charming.

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