Ahh i see what you mean. Looks like W.multicaulis with those short calyx lobes, pronounced 3-fid style and diminutive habitat. Just a question to confirm, do you remember where the plants originated from?
Thanks, Tapirlord. The calyx? seems to be split into 4. They flower rarely and close to the base of the plant. This is the first time we have seen them throw up a longer flower stem of about 7cm.