The complex Tormentils

I have an increasing amount of Tormentil in the fields but it is not all straightforward Tormentil (Potentilla erecta). I have identified Trailing Tormentil as well (Potentilla anglica). The latter has four or five petals (rather than four) with leaves shortly stalked above and longer stalked below (rather than almost unstalked) and larger flowers. More complexity comes in with a triple hybrid known as Hybrid Cinquefoil which is quite similar to Trailing Tormentil. If I can spot that and also Creeping Cinquefoil then I will have the whole set. The first picture above is P. erecta and the second P. anglica.