Yellow Star Thistle *

Centaurea solstitialis

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: Barnaby's thistle.
Generic common name: KNAPWEED, STAR-THISTLE.

Photographs from SMMNRA: road shoulder in chaparral, Sept 2004.

Characteristics: non-Native, Yellow, Medium, Solitary, Simple, Herbaceous, Annual, Late Spring, Summer.

Note: Invasive exotic.