Exochorda racemosa ? (Poland)

Exochorda racemosa (Lindl.) Rehder, in C.S.Sargent, Pl. Wilson. 1: 456 (1913) (syn: Amelanchier racemosa Lindl. ; Exochorda racemosa (Lindl.) C.K.Schneid.);
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Central Asia, S. Russian Far East to Korea and China: China North-Central, China South-Central, China Southeast, Kirgizstan, Korea, Manchuria, Primorye, Tadzhikistan, Uzbekistan; Introduced into: Arkansas, Connecticut, Delaware, Georgia, Louisiana, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia as per POWO;
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Plant for ID-PC-33-23.09.2015 : 2 posts by 2 authors. Attachments(4)
please identify the plant from a Warsaw Park.

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References:
POWO
https://landscapeplants.oregonstate.edu/plants/exochorda-racemosa
https://commons.wikimedia.org/wiki/Category:Exochorda_racemosa