Michal Hieronim Leszczyc-Suminski (Born September 30, 1820 in Ośno - Died 26 May 1898 in Tharandt) was a Polish botanist, painter and art collector.
Ośno, Żnin County in Kuyavian-Pomeranian Voivodeship (north-central Poland)
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Ośno, Aleksandrów County in Kuyavian-Pomeranian Voivodeship (north-central Poland)