About Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Representative specimens of Agrostis hyemalis were examined from various locations. In Mexico, specimens were collected from multiple municipalities in different states. For example, in Aguascalientes, a specimen was collected on 29 Mar 2010 at the margin of Presa Los Adobes in Municipio Calvillo (21.805 ° N, 102.6886111 ° W, 1960 m alt., F. Macias 5, deposited in FCME, IEB, INEGI, MEXU [*], UAMIZ). In Baja California, a specimen was collected on 17 Aug 1967 in Los Llanitos, Municipio Ensenada (30.96666667 ° N, 115.4333333 ° W, 2550 m alt., R. Moran and R. F. Thorne 14267, MEXU). Similar details are provided for many other states including Baja California Sur, Chihuahua, Coahuila, Durango, Hidalgo, Jalisco, Mexico, Michoacan, Puebla, Queretaro, San Luis Potosi, Sonora, and Zacatecas. In the USA, specimens were collected from Arizona (Pima County, Forest Cabin, Baboquivari Mountains, 31.7897 ° N, 111.586 ° W, 2091 m alt., 14 May 1941, C. Goodding 105 - 41, ASU) and Texas (Hidalgo County and Jeff Davis County). Additional examined specimens can be found in Suppl. materials 2, 3.