Acer palmatum 'Pink Passion'

... Apparently not. From the same website, 'Shirazz' :

"Appelé a tort pink passion ou gwen’s rose delight dans la grande distribution."
""Wrongly called pink passion or gwen's rose delight in the mass market."

So the two are apparently different cultivars.

 

This is an old thread, and an old argument! :)

I learned that 'Gwen's Rose Delight' is the _cultivar_ name but 'Shirazz' is the _trademark_ name. They are the same maple. So when referring to the cultivar, the correct name would be 'Gwen's Rose Delight'. I've certainly never seen this name in the mass market, where 'Shirazz' is omnipresent.

The MS database lists GRD as a synonym for Shirazz, without a listed authority, and I believe incorrectly.

According to the same database, 'Pink Passion' is a separate cultivar, the authority attributed to van Gelderen.

 

Yes, as stated in the first page of this thread, it seems likely that very similar reversions of 'Geisha' have been discovered and named on three separate occasions. 'Gwen's Rose Delight' (AKA Shirazz TM) was discovered in New Zealand and patented. The people who bought the rights obviously didn't like the name as they decided to market it under the "Shirazz" trademark. A coincidental selection of a very, very similar, if not identical, reversion in North America led to the introduction of the cultivar 'Geisha Gone Wild' which is free of patent royalty fees. Presumably 'Pink Passion' was the coincidental European discovery of a patent free version of a very similar reversion.

One thing made me laugh in the description of 'Pink Passion' at a UK gardening web seller: