Botanical name: Cornus mas
Common name: Cornelian Cherry Dogwood
Family: Cornaceae
Origin: Central and southern Europe and western Asia
USDA Plant Hardiness Zone Map
Small yellow inflorescences are numerous and clustered on the bare stems in March, effective for about three weeks in late Winter and heralding the impending arrival of Spring.
Similar plants: Cornus mas (Cornelian Cherry Dogwood)
Link to this plant:
https://toptropicals.com/catalog/uid/cornus_mas.htm