Taxon Swallenia alexandraeAuthority (Swallen) Soderstrom & DeckerFamily PoaceaeCommon Names Eureka Dunes grass | Eureka Valley dunegrass | Eureka dunegrass | Associated Scientific Names Swallenia alexandrae | Ectosperma alexandrae | Name Last Reviewed 3/27/2018CPC Number 4171ITIS: 42201 The Plant List: kew-446126 USDA: SWAL
NatureServe ID 142060Natureserve Rounded Global Rank G2Global Rank Review Date 2/6/2012Federal Listing Status LE
Swallenia alexandrae is a perennial grass found only in the southern portion of Eureka Valley Sand Dunes system in Inyo County, California (USFWS 1983). The grass forms large clumps across dune slopes and spreads as the shifting sand surrounds newly formed stems. Flowering stalks are 1.5 to 10 dm tall and have stiff lance like blades that are 2.5 to 12cm in length (USFWS 1983). Small flowers grow in narrow clusters and bloom from April to June (Munz 1974). Since the Dune Grass was discovered in 1949 by Anne Alexander, it's populations have been in decline as a result of off road vehicle recreation (USFWS 1983). In 1976, The Bureau of Land Management closed the Dunes to vehicle recreation (USFWS 1983). Although this has promoted recovery, plants are still threatened because closure to off road vehicles is not fully observed. Swallenia alexandrae was federally listed as an endangered species on April 26, 1978.