Senna

in xerophilous/sarcocaulescent scrub on coastal piedmont southwest of Sierra de la Laguna.

in xerophilous/sarcocaulescent scrub on coastal piedmont southwest of Sierra de la Laguna.

in xerophilous/sarcocaulescent scrub on coastal piedmont southwest of Sierra de la Laguna.

in xerophilous/sarcocaulescent scrub on coastal piedmont southwest of Sierra de la Laguna

plants 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.

plants 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.

plants 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.

plants 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.

plants 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.

plants 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.

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.

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.

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.

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.

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.

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.

suffrutescent perennial on white limestone soil and gravels in bottom of arroyo tributary of Fresnal Creek in remote Hells Half-acre region

Plants scattered on open degraded grassland, gravelly volcanic soils over basalt substrate.

Plants scattered on open degraded grassland, gravelly volcanic soils over basalt substrate.

Plants scattered on open degraded grassland, gravelly volcanic soils over basalt substrate.

Plants scattered on open degraded grassland, gravelly volcanic soils over basalt substrate.

Plants scattered on open degraded grassland, gravelly volcanic soils over basalt substrate.