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Usually designated in the US as "PP" followed by a series of numbers which indicate the actual patent number. In the UK, patented plants are designated as PBR; in Canada, asCPBR.
Plants whose names are in the process of being patented are referred to as PPAF.
This generally is a catalog referral phrase.
For the general gardener it may not be important but new plants, like inventions, can also be patented. This is a protection for the owner who created the \'new\' plant.
