plants on flat plain of a large bolson in silty, slightly gyp/saline, calcareous clay soil, along the margin between a long abandoned agricultural area with numerous diverse annuals resulting from recent heavy rains and patches of undisturbed native desert scrub. Site is located just inside (ca. 50 m) the state line.
plant in shallow roadside drainage on flat plains of a large bolson (los llanos), in silty, slightly saline, gyp-calcareous clay soil, along the margin between a long abandoned agricultural area and undisturbed native scrub.