Northwest side. Verdugo Crestline Dr. (fire road) just north of the 210 freeway, enter on the west side at Topley Lane, off of Newhome Ave. in city of Sunland., A short distance east from Lat., Long., 34 deg 15' 12.2'' N, 118 deg 19' 16.8''W.
Near west end of the San Emigdio Mountains: Bitter Creek National Wildlife Refuge; North facing headwall of Bitter Creek. North of Cerro Noroeste Road, east of Pelato Peak. Southwest end of Unit #2 of Refuge map., Started near 34.91570N, 119.38533W dropped down along an old dirt road that more or less strarting to turn to a trail. to a flat area with Artemisia tridentata, Atriplex spp. that you can see from the starting point, to 34.92206N, 119.38200W.
Far west end of the San Emigdio Mountains: Bitter Creek National Wildlife refuge, south end, within map units 6, and 11. South and southwest of Cerro Noroeste Road. Just north of Ventura County line., Collections started in section 36, near 34.90241N 119.38576W, and ended in section 34, near 34.90862N 119.43329W. The end was along a dirt road that runs east back to the Cerro Noroeste road, and is across from Pelato Peak.
East of Topatopa Mountains: Sespe Wildlife Area. (Condor Sanctuary) Dough Flat, end of road (Goodenough road) from the town of Fillmore. Beyond Dough Flat the road has been reverted to a hiking trail., General collecting from Dough Flat near 34.52222N, 118.89553W, to where the road had been washed out, crossing Redrock Creek near 34.53070N, 118.89483W.