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World Checklist of Selected Plant Families (WCSP)

Poa lacustris A.Heller, Muhlenbergia 6: 12 (1910).

This name is a synonym.

Accepted Name: Poa occidentalis (Vasey) Vasey, Contr. U.S. Natl. Herb. 1: 274 (1893).
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:

* Poa flexuosa var. occidentalis Vasey in J.T.Rothrock, Rep. U.S. Geogr. Surv., Wheeler 6: 290 (1879).

Poa occidentalis (Vasey) Rydb., Mem. New York Bot. Gard. 1: 50 (1900), nom. illeg.

* Basionym/Replaced Synonym

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