This project has its geographical "Floristic Region" defined by the digital vegetation map of the Santa Monica Mountains N R A, a simplified version of which is shown below. The links lead to higher resolution versions of the same image.
Moderate resolution image of digital vegetation map (0.5MB)
High resolution image of digital vegetation map (1.5MB)
Very high resolution image of digital vegetation map (4.5MB)
Original PDF version of digital vegetation map (4.5MB)