From Wikipedia with google translate : "Corcodusul (Prunus cerasifera, P. divaricata synonym), also called Myrobalan, is a species of plant belongs to the genus Prunus, native of central and eastern Europe, southwest and central Asia.
It is one of the first European flowering trees in spring, often in mid-February. Grow as large or small shrub, reaching 6-15 m in height. The leaves are 4 to 6 cm long, white flowers are 1.5-2 cm diameter with five petals. The fruit is a drupe 2-3 cm diameter, with yellow or red, are edible and reach maturity from mid August to mid September."
What I can tell about them is that they taste like plums :D