Hi, I see this is your first post so *Welcomes* come first
I can't see the bit that you mean on the full shot but, if it's coming out lower than where the flower spikes are at the moment, it's likely to be a root. If it's coming from a leafbract above where the second spike is, it may be another spike. The chances are it's a root, but you should be able to tell by the shape as well - a new spike looks flat-rounded at the tip (often described as 'mitten' shaped) whereas a root will be more pointed and have a silvery colour as it grows......
It looks really pretty, I can see why you bought it