OC Great Park, extreme E, nr Borrego Wash, 12-25-11. © Ron Vanderhoff.


Coulter's Horseweed

Conyza (Laennecia) coulteri

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Talbert Reg Park, Costa Mesa, 7-15-12. © Ron Vanderhoff.

Talbert Reg Park, Costa Mesa, 7-15-12. © Ron Vanderhoff.

Talbert Reg Park, Costa Mesa, 7-15-12. © Ron Vanderhoff.