From this link
here, somebody's guttata (or at least they say it is one) -
appears to have flowered from both a dried sheath and a green sheath.
But - on the other hand, it's possible that their very last photo on the page is of a different plant, and is not a guttata.
I think the best bet is to go with the
AOS article - as in tigrina flowers from a green sheath, and guttata flowers from a dried sheath. Although - I wouldn't be surprised if there happen to be exceptions heheh.