United States, California, San Diego, Collected from Old Mission Dam about 1/2 mile from entrance bridge in shaded area, 2 meters sout of river in wet sandy soil.
32.84389 -117.04167
32.00° 50.00m 38s N; 117.00° 2.00m 30s W
300 meters
984ft.
Nearby associates: Baccharis glutinosa, Populus fremontii, short grasses, and sedges.
Herbaceous perennial with white umbellate flowers and distinct celery odor. Fruit ribs not winged.