Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1464426
| CA | San Diego | [ditch along Monument Rd, near International Friendship Park, Tijuana River National Estuarine Reserve] | 2018 |
18070305
| Cottonwood-Tijuana | established |
1438168
| CA | San Diego | Border Field State Park, S of city of Imperial Beach. On road (East/West) paralleling US/Mexico border fence in between South Mesa and Lichty mesa. | 2005 |
18070305
| Cottonwood-Tijuana | established |
1438093
| CA | San Diego | Growing in dried pool beside road. Otay Mesa, 2 miles southeast of Brown Field, south of Siempre Viva Road. | 1967 |
18070305
| Cottonwood-Tijuana | established |
1438204
| CA | San Diego | Growing on edge of dried vernal pool 2 miles SE of Brown Field, Otay Mesa. ' | 1967 |
18070305
| Cottonwood-Tijuana | established |
1438878
| CA | San Diego | Imperial Beach, Tijuana Slough National Wildlife Refuge, E of Tower Road, Rivermouth Trail, N of Tijuana River, along W end of Imperial Beach Naval Auxillary Landing Field, | 2006 |
18070305
| Cottonwood-Tijuana | established |
1437450
| CA | San Diego | La Media Road, 0.5 mile south of Otay Mesa Road, Otay Mesa. | 1969 |
18070305
| Cottonwood-Tijuana | established |
1439463
| CA | San Diego | Laguna | 2000 |
18070305
| Cottonwood-Tijuana | established |
1439844
| CA | San Diego | Otay Mountain; SE base, W end Marron Valley on slopes of mtn. N of Tijuana R., between Mine and Butteweg canyons. | 2004 |
18070305
| Cottonwood-Tijuana | established |
1437959
| CA | San Diego | Peninsular Range, San Ysidro Mountains, SE foot of Otay Mtn, just north of Mexican border, on slopes to north of Marron Valley (= upper Tijuana River Valley), c. 5 mi. west of Tecate Peak | 1997 |
18070305
| Cottonwood-Tijuana | established |
1438096
| CA | San Diego | Peninsular Ranges, Brown Airport, Otay Mesa | 1978 |
18070305
| Cottonwood-Tijuana | established |