I hope there are some Oxalis experts lurking here who are able to clear up the niggling doubt I feel about an Oxalis I grow here. It came originally from Sue Wallbank in Tasmania, Australia but she was uncertain of its identity and sold it to me with a question mark. It's close to O. hirta and might be a form of that species, but there are significant differences in form that have got me wondering.
It came to me as a very large bulb, like a Turkish dried fig in shape and size (if you're familiar with those).
The pictures I have attached below show the plant in full bloom and then a couple of comparisons with Oxalis hirta 'rosea' which I have.