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World Checklist of Selected Plant Families (WCSP)

Achnatherum nelsonii (Scribn.) Barkworth, Phytologia 74: 9 (1993).

This name is a synonym.

Accepted Name: Eriocoma nelsonii (Scribn.) Romasch., PhytoKeys 126: 100 (2019).
Family: Poaceae
The Poaceae generic classification system originated from the GrassBase database, originally based on Genera Graminum (1985). Work is in progress to update this to a new globally accepted and collaborative generic classification based on the latest research.
Homotypic Names:

* Stipa nelsonii Scribn., Bull. Div. Agrostol. U.S.D.A. 11: 46 (1898).

Stipa columbiana var. nelsonii (Scribn.) Hitchc., Contr. U.S. Natl. Herb. 24: 254 (1925).

Stipa columbiana subsp. nelsonii (Scribn.) H.St.John, Fl. S.-E. Washington: 61 (1937).

Stipa occidentalis var. nelsonii (Scribn.) C.L.Hitchc., Vasc. Pl. Pacif. N. W. 1: 715 (1969).

Eriocoma nelsonii (Scribn.) Romasch., PhytoKeys 126: 100 (2019).

* Basionym/Replaced Synonym

Original Compiler: W.D.Clayton, R.Govaerts, K.T.Harman, H.Williamson & M.Vorontsova