Eriocoma occidentalis (Thurb. ex S. Watson) 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 (Thurb. ex S. Watson) Romasch., comb. nov.

Stipa occidentalis Thurb. ex S. Watson, Botany (Fortieth Parallel) 380. 1871 [Basionym] ≡ Stipa stricta var. sparsiflora Vasey, Contr. U.S. Natl. Herb. 3(1): 51. 1892 ≡ Stipa occidentalis var. montana Merr. & Davy, Univ. Calif. Publ. Bot. 1: 62. 1902, nom. illeg. superfl. Achnatherum occidentale (Thurb. ex S. Watson) Barkworth, Phytologia 74(1): 10. 1993 ≡ Type: USA, California, Yosemite Trail, 8000 ft, 20 Aug 1866, H.N. Bolander 5038 (lectotype: GH-22338! designated by Hitchcock, Contr. U.S. Natl. Herb. 24(7): 242. 1925; isolectotypes: BM-000797606 [image], G-00176505 [image!], MO-2151636 [image!], NY-00431565 [image!], NY-00431567 [image!], US-3441781, US-992306 ex GH!, US-745821!, W-18890217496 [image!], YU-244757 [image!]).

Eriocoma occidentalis = Stipa stricta Vasey, Bull. Torrey Bot. Club 10: 42. 1883, nom. illeg. hom. non S. stricta Lam. ≡ Stipa oregonensis Scribn., Bull. Div. Agrostol., U.S.D.A. 17: 130, f. 426. 1899. Type: USA, “Oregon” [but from Washington, which became a state in 1889], 1882, W.N. Suksdorf s.n. (holotype: US-556921!).