Lysimachia paridiformis var. stenophylla

I was initially reluctant to put this plant in my garden as it had all the hallmarks of a rampant spreader. However its proved to be very well behaved and a wonderfull addition to the shade garden. It is a slowly spreading evergreen perennial with whorls of deep green foliage about 30cm high.

In summer the centre of the whorl develops bright yellow flowers that last for months