Eriocoma occidentalis subsp. californica (Merr. & Burtt Davy) Romasch., comb. nov.

Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J. & Reyna, Jesus Valdes, 2019, A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, x Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa, PhytoKeys 126, pp. 89-125 : 96

Eriocoma occidentalis subsp. californica (Merr. & Burtt Davy) Romasch., comb. nov.

Stipa californica Merr. & Burtt Davy, Univ. Calif. Publ. Bot. 1: 61. 1902 [Basionym] ≡ Stipa occidentalis var. californica (Merr. & Burtt Davy) C.L. Hitchc., Vasc. Pl. Pacific NW 1: 715. 1969 ≡ Achnatherum occidentale subsp. californicum (Merr. & Burtt Davy) Barkworth, Phytologia 74(1): 10. 1993. Type: USA, California, San Jacinto Mts., north side of Fullers Ridge, 2100 m, Jul 1901, H.M. Hall 2556 (holotype: unknown; isotypes: CAS-0005660 [image!], US-556911!).

Eriocoma occidentalis californica = Stipa nelsonii var. longiaristata Barkworth & J. Maze, Taxon 28(5/6): 623. 1979 ≡ Achnatherum nelsonii subsp. longiaristatum (Barkworth & J. Maze) Barkworth, Phytologia 74(1): 9. 1993. Type: USA, Washington, 8-9 mi W of Spokane, 19 Jun 1940, J.S. Swallen 6231 (holotype: DAO-000465413 [image!]; isotype: US-2303647!).