I think that the powers that be have lumped it into Utricularia.
I tried seed of P. tenella & multifida (from Rowland, in the U.K.)
last year, but without much success. The tenella produced a few
shoots (similar to a potfull of U. bisquamata I was growing at
the same time), but they made little progress, and soon disappeared.
The multifida did not germinate at all.
-- Clarke Brunt (clarke@brunt.demon.co.uk)