May not be distinguishable from surrounding alliances. Distichlis spicata stand in swale surrounded by Sporobolus airoides stands on hummocks above swale. Stand is about 300 m from San Joaquin River in San Luis NWR. Cow pies throughout at about 5% cover. Stand has been grazed this year. Distichlis spicata is fairly high cover throughout with some open spaces where litter or bare ground occurs.