Anselme Gaëtan Desmarest
The brown algae "Desmarestia" is named in honour of Desmarest , as well as the family ( Desmarestiaceae ) — and in turn , the order ( Desmarestiales ) — of which the genus is the type species . 
<triplet> Desmarestia <subj> Desmarestiaceae <obj> parent taxon <triplet> Desmarestiaceae <subj> Desmarestiales <obj> parent taxon