Dear Friends, I do not pretend to be knowledgeable about Oxalis, but these plants came to me from a very reliable source so I have good reason to be certain of the ID. I don't grow typical compressa to compare either. I'll check foliage tomorrow and report back. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +