I forgot what I've got. I have both walliniana and sipitangensis, but ahhh, well, errr, took the tags out...(sheepish look). Which one has the smaller leaves, does anyone know? The one with slightly larger leaves has quite a few blooms.
Leaf size isn't a very good determining factor, but the leaves are easily distinguishable. Here are my two plants:
Edit: I should have said that new sipitangensis leaves do look a fair bit like small walliniana leaves (although the veins are more pronounced, as you can see above), but when they mature, they get less bladelike and more curved, while walliniana leaves are very uniform.