I can see that the foliage is quite different in your photos of the species, so I can believe that it might be an interspecific hybrid. I'll remove the species name from the entry, but this is going to come up again and again because there are many nurseries selling this plant as A. pelegrina 'Rosea.'
By the way, there is no such thing as A. pelegrina var. rosea, A. pelegrina subsp. rosea, or A. pelegrina var. alba. They aren't even listed as synonyms in the major taxonomic databases. They may have been accepted names at one time, but it must have been very long ago.
