Simen Oscar Fredrik Omang (23 March 1867 – 29 November 1953) was a Norwegian botanist.
Omang was born in Hamar on 23 March 1867, and graduated as cand.real.
[1] Omang distributed an exsiccata-like series of specimens named by him Specimina selecta Hieraciorum Norvegiae.
[2] He was the father of Reidar Omang.
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