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World Checklist of Selected Plant Families (WCSP)

Agropyron semicostatum var. thomsonii Hook.f., Fl. Brit. India 7: 369 (1896).

This name is a synonym.

Accepted Name: Elymus semicostatus (Steud.) Melderis, Enum. Fl. Pl. Nepal 1: 132 (1978).
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:

Elymus semicostatus subsp. thomsonii (Hook.f.) Á.Löve, Feddes Repert. 95: 453 (1984).

Elymus semicostatus var. thomsonii (Hook.f.) G.Singh, J. Econ. Taxon. Bot. 8: 498 (1986).

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