Hi Evan ... There are several varieties of oxalis with solid green leaves, such as O. latifolia. I don't know that there is a standard green-leaved variety, putting it that way. And I do believe that 'Atropurpurea' isn't commonly recognized, but Oxalis purpurea (purple leaved wood-sorrel) is. At least I think so.
Frankly, it's a big headache.
