Begonia Acetosa is an heirloom rhizomatous begonia. This begonia has soft velvety leaves. The leaves are an olive color on the top of the leaf and underneath it is a blood red/burgundy color. So very pretty! The blooms are tall and form a ball shape, it is an unusual flower. The flowers are tiny and form a large ball of flowers gathered together! If you don’t have this begonia them you should add it to your collection. It is just so unusual. I have this begonia growing in my greenhouse right now. I don’t want to move it because it is growing so well there.