Family:  Cornaceae
Latin name:  Cornus sericea Alternate name: Cornus stolonifera
Common names:  Red osier dogwood , Red twig dogwood

*When I first photographed these, they were labled Cornus stolonifera. The online catalog no longer lists any plants as Cornus stolonifera, but beside these includes (received as Cornus stolonifera).

The USDA Plants data base lists Cornus stolonifera as an alternate name.