[Rhizomatous] Begonia imperialis
Native range: Southern Mexico, Guatemala
Known names: --
Hardiness: Best kept above 60°F
Mature Size: ~10" Tall, ~12" Wide
Light: Bright, indirect light
Water: Only water once the top 1" of the soil feels dry. Let water run through the pot. 
Soil: Fast draing, coarse indoor potting soil.
Dormancy Period: N/A
Pet-Safe: No
Plant Size: Grown in 4" , shipped semi bare-root
 
Darker leaves with less light, more light will produce bright yellowish green leaves!
Rhizomatous Begonias can, and should, be allowed to dry out slightly between watering. Best wide, shallow pots.