Listed by the California Native Plant Society as being rare, threatened, or endangered, Santa Susana tarweed (Deinandra minthornii) can be found where sandstone outcrops of the Chatsworth formation occur, such as in the Santa Susana Pass area in the Simi Hills.

This photograph was taken on a run at Sage Ranch on October 1, 2007.

Note: Treated as Hemizonia minthornii in the 1993 Jepson Manual.