I am just now revisiting this thread.
Julia, if you compare the one on this left in your above photo to see if it looks like Patty's. Patty's 'Pluto' looks to be correct. It does look like it could possibly be 'Pluto'.
The semp to the right side in your photo is neither 'Pluto' or 'Mars'. Hen and Chicks (Sempervivum 'Pluto') Hen and Chicks (Sempervivum 'Mars')
