Dipple Gowt. From Nilitz x P. obovata ssp willmottiae. There aren’t that many hybrids with willmottiae around. Saunders had his Silver Dawn which resulted, some generations further down the line, into Lois’ Choice and Sunny Girl. Dipple Gowt was bred by Fawkner more recently, a sibling of Bhutan and some others. It has a pale greenish yellow color, quite likeable. The flower itself can be nearly double (the images are from a plant which hasn’t grown to maturity yet). It’s a nice and healthy plant, but the stems are only just adequate IMHO.