Rock rose (citrus)

This is the plant that we used to have outside the front window at Emerson Road and I've been trying for a while to find it again.  We put it in late last year and it has started flowering this year.

Each flower has petals like tissue paper and only lasts a day with the petals dropping off at sunset but there are loads of flowers and the display lasts for a good few weeks.  It's also evergreen so doesn't look too bad for the rest of the year.

Julie