Phrag QF Naukana Kealoha

[D_novice]

Hi all. Silly question but what does QF stand for? Is it Quintal Farms in Hawaii? Does this mean that they created this cross? (Judging by the Hawiian name, it's not implausible).

I have another plant labelled QF, it says QF Phrag Dallesandroi 'Black as Night' x Longifolium. I'm thinking the "QF" on the label means this is a Quintal Farms cross.

However, I don't understand why this isn't Nicholle Tower, or at least a variation on it. NT is Dallesandroi x Longifolium.

Anyone who can advise me on understanding what is probably an incredibly elementary question, much appreciated!! Thx.