Unknown Evening Primrose

Rubytoo

Could anyone help me with an identity please.
I have been given an Evening Primrose with pretty leaves and have been told it is perennial and has cream flowers. The leaves are about 20 to 22cms (8 or 9 inches old money). I have tried looking up the description but often they are flowers with no leaf detail. 
I do appreciate you cannot say what cultivar exactly but it would help me to know what to look for and have a vague idea. Thank you.

So chuffed my first picture has worked so easily thanks to @Nora and her brilliant tutorial, painless.

BobTheGardener

Judging by the leaves, it's an Oenothera versicolour, like 'Sunset boulevard' or 'Lemon sunset'.

Dovefromabove

Have a look at Oenothera caespitosa

Rubytoo

Thanks @BobTheGardener, versicolour helps.

Rubytoo

@Dove thank you too, that does have cream flowers.

Paul B3

I'd go for O.caespitosa too ; plant somewhere sunny and very free-draining .

Can be very short lived otherwise .

nutcutlet

I think I favour O. versicolor

Rubytoo

Thanks @nutcutlet and @PaulB3.
I think mine has a red central vein , and the versicolour looks more likely, though they both have the "spiney" leaves.
The cultural conditions look similar though, so out with the compost and grit. I might keep it overwintered in a pot for this year with our clay based soil.
Thanks everyone.