Drosera dielsiana is a compact rosetted sundew native to South Africa (KwaZulu-Natal, the Free State, the Northern Provinces), Eswatini (Swaziland), Mozambique, Malawi, and Zimbabwe. It was described as a new species by Arthur Wallis Exell and Jack Rodney Laundon in 1956. The diploid chromosome number is 2n=40. It was named in honor of Ludwig Diels, the author of the 1906 monograph on the Droseraceae.

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