Descurainia sophia (L.) Webb ex Prantl

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RANCHO SANTA ANA BOTANIC GARDEN
Flora of Los Angeles County, California, USA
BRASSICACEAE
Descurainia sophia (L.) Webb
Liebre Mountains, Knapp Ranch area at upper end of Castaic Creek
drainage in broad alluvial valley at head of Cienega Canyon, south
of Liebre Mountain. From gate at old inholding boundary near
spring area along Forest Service Road 7N22 down to beginning of
extensive wetland south of the old dry pastures. Near 34°41’20”N,
118°39’55”W. T7N R17W NE 1/4 sec. 22. Elevation ca 3000 -
3280 ft.
Broad alluvial valley grading gently to the SSE, sandy to sandy
loam soils.
Drier disturbed flats dominated by Eriogonum fasciculatum,
Artemisia dracunculus, Rhus trilobata, and Corethrogyne
filaginifolia. Spring areas with Baccharis salicifolia, Salix
lasiolepis, S. laevigata, S. exigua, dense stands of Carex,
Anemopsis califomica, Juncus mexicana in understory.
Uncommon annual, flowers yellow.
Steve Boyd 8677
25 Apr 1996
03183453