Ambrosia psilostachya DC.

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Herbarium of U. C. Riverside (UCR)
Plants of Los Angeles County, California, USA
Ambrosia psilostachya DC.	AST
San Gabriel MtnsAzusa, mouth of San Gabriel Canyon 1.8 mi.
north of Sierra Madre Ave., north of bike trail parking lot, along
flowing aqueduct of water filtration plant (Azusa 7.5’ Q.:
34°0934"N, 117°5439"W, ±1000m, TIN R10W S22). Alt.:
223m/730ft. River bottom alluvium, riparian zone surrounded by
coastal sage scrub and chaparral, with Enceliafar., Artemisia
calif., Ageratina aden., Baccharis salic, etc.
Fairly common 13m tall perennial.
R.G. Swinney 9948	04 Dec 2008
Entered into UCR Database (63561UCR1 )
03993277