Hi Jo Ann.
Moussouri Botanical garden lists this plant as Hylotelephium telephium (Atropurpureum Group) 'Postman's Pride'.
http://www.missouribotanicalga...
However, apparently genus Hylotelephium is being changed to genus Sedum which is what we're doing here on ATP. So:
Genus - Sedum
Species - telephium
Cultivar - Postman's Pride (no quotes as the system adds those).
Synonym - Hylotelephium telephium (no cv. name).
Hope this helps. Here a thread where the Sedum/Hylotelephium was discussed.
The thread "Hylotelephium telephium vs. Sedum telephium" in
Plant Database forum