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Yes. “Heisteria duckei Sleumer” is public domain and released under CC0, so it is free to download and reuse for any purpose, including commercially, with no permission needed.

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It is catalogued from the open collection of Smithsonian Open Access and is free to reuse under CC0.

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“Heisteria duckei Sleumer” by 84 - Brazil Southeast is a public-domain (CC0) artwork, free to view, download and reuse for any purpose. It is catalogued from the open collection of Smithsonian Open Access.

Heisteria duckei Sleumer

84 - Brazil Southeast

Title	Heisteria duckei Sleumer
Artist	84 - Brazil Southeast
Classification	Sleumer, H. O. 1935. Repert. Spec. Nov. Regni Veg. 38 : 207.
Origin	[Minas Gerais?? This record attached to multiple catalog records, probably representing specimens without precise locality in Brazil], Brazil, South America - Neotropics [Minas Gerais?? This record attached to multiple catalog records
Holding institution	Smithsonian Open Access
Rights	Public domain (CC0)