Click Here To Visit The SRGC Main Site
Magnar,I think your "Podophyllum pleianthum" is a Diphylleia species.Podophyllum pleianthum has plain green, glossy leaves with shallow, regular lobes.Robin Callens
Here is Podophyllum pleianthum---sorry the picture of the foliage is not very good.
Magnar - thanks. Yes, the potentilla flowers well for me; well at least the part of the plant that is growing over a flat sandstone block does - the stems must be well ripened by the warmth. By contrast, the part of the mat which drapes over the side of the blocks flowers very sparsely.