Sisymbrium altissimum L.

RANCHO SANTA ANA BOTANIC GARDEN
Flora of Los Angeles County, California, USA
BRASSICACEAE
Liebre Mountains, Portal Ridge, upper Broad Canyon, ca. 1 mile
east of VABM King and 1.2 miles east of the junction of Forest
Service Roads 7N07 and 7N07A, along the ridgeline dividing
Bleich Canyon and Broad Canyon. Near 34° 42’ 23.4”N 118° 28’
51.3”W. T7N R15W NW 1/4 SW 1/4 sec. 9. Elevation ca. 3920
ft.
Open area along ridgeline, possibly type converted in the past.
Low scrub with scattered pines on gentle ridgetops, grading into
dense chaparral on steeper slopes. Decomposed granite substrate.
Low scrub with Eriogonum fasciculatum, Eriophyllum
confertiflorum, and Pinus sabiniana, chaparral with Adenostoma
fasciculatum, Cercocarpus betuloides, and Quercus john-tuckeri.
Annual, flowers pale yellow. Locally common along disturbed
road edges.
03197331
Steve Boyd 9239
Timothy S. Ross
21 Mar 1997
03197331