Single Record

Comments: NEED IN SITU PHOTOS. In the Watershed, Great Basin wildrye, perennial and cool-season, has been vouchered two times: from three miles west of Villa Grove (Saguache Co, 1935) and from the San Luis Hills (Conejos Co, 1999). (Note that the two vouchers collected by G. Engelmann in 1881 and labeled "Rio Grande Co" are from Grand Co, CO). Apparently, Ackerfield does not accept the 1991 San Luis Hills voucher ((Conejos Co), perhaps because it was submitted by Hobie Dixon, but judging from the photograph of the voucher the identification is correct. Shaw (2008) indicates both Saguache and Rio Grande counties. Recently an occurrence has been documented from a little south and above South Fork (19 July 2026, iNaturalist #380137845). Laymus cinereus grows, according to Shaw, "on talus slopes and in canyon bottoms at low elevations to foothills." This species is very common across the divide in the San Juan River drainage. The USA distribution is all Western states. The Watershed records stands at the extreme southeast corner of this distribution, and would be the only ones in the Rio Grande watershed. Allred et al.(2020) say the only two collections from New Mexico appear planted, and do not lie in the Rio Grande drainage.