I've edited the entry to read Cornus officinalis because Raulston says it's from China, and Cornus mas is a European species. I added Cornus mas 'Spring Glow' as an also-sold-as name, however, because Google has so many more results for cornus mas spring glow (530,000) than cornus officinalis spring glow (25,400).
Cornelian Cherry (Cornus officinalis 'Spring Glow')