Jonathan, I have the Yuccado hidalgo form, which doesn't have the white towards the centre either. And yes, the grandiflora has a longer stigma than the hidalgo, so I would say it is the grandiflora. Ina On 31/01/2012 4:18 a.m., Jonathan wrote: > I have compared them to Z. macrosiphon 'Hidalgo form' (ex. Yucca Do) and the flowers indeed are slightly larger and have a longer style.