Taxonomic status: Synonym

homotypic synonyms:
Amellus spinulosus Pursh; Haplopappus spinulosus (Pursh) DC.; Sideranthus spinulosus (Pursh) Nutt. ex Nees; Sideranthus spinulosus (Pursh) Sweet ex Rydb.; Xanthisma spinulosum (Pursh) D.R.Morgan & R.L.Hartm.; Xanthisma spinulosum var. spinulosum (Pursh) D.R.Morgan & R.L.Hartm.;

protologue: Trans. Amer. Philos. Soc. ser. 2 7: 301 (301)
URL protologue: https://archive.org/stream/#page/301/mode/2up

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