I have the FCC form, purchased from a nursery in England. The Dutch grower Wim de Goede saw it when he visited me once and said he had a better form, which he subsequently sent me. His form has darker yellow spathes, but I can't recall just now the color of the stems. I don't know whether either plant is widely stoloniferous, because I had them in big pots, but they are now loose in a raised bed, so I'll soon find out. When I saw this species in Crete, I was surprised at how tall the flower stems were -- at least 75 cm, coming out among rocks in a river gorge. I may be sorry to have turned it loose. Jane McGary Portland, Oregon, USA