Latin name: Ambrosia psilostachya DC.
Pronunciation: am-BRO-zee-a sy-lo-STAY-kee-a
Common name: Western ragweed
Family: Asteraceae (Sunflower)
Habitat: Roadsides, dry fields, disturbed and waste places to about 2500' in coastal sage scrub and chaparral communities, both cismontane and in parts of the Colorado Desert
Blooming period: July to November
Name derivations: 1) Ambrosia 2) psilostachya