United States, California, San Bernardino, Rancho Cucamonga: Bajada at the foot of the eastern San Gabriel Mts. West of Beryl Ave. Immediately S of Heritage Park; ca. 3 road miles N of Foothill Blvd.; Cucamonga Pk. 7.5' Quad.
Abandoned vineyard now covered by coastal sage scrub (Artemisia calif.; Eriogonum fasciculatum) and annual weeds. Drainage channel crossing site w/fairly high native spp. density but much impacted by off-road vehicles in some places. Abundant in patches on shaded banks of disturbed drainage.
Annual. Petals ca. 2 mm, white. Lflts of lower lvs +/- obovate. Weedy.