How many types of shrubs can be found near Mount Rushmore ?
Species include Royal Hakea ( " Hakea victoria " ) , Qualup Bells ( " Pimelea physodes " ) , Oval - leaf Adenanthos ( " Adenanthos ellipticus " ) , Blue Dampiera ( " Dampiera linearis " ) , Silver - leafed Barrens regalia ( " Regelia velutina " ) , Barrens clawflower ( " Calothamnus validus " ) , and the Broad - leaved Brown Pea ( " Bossiaea ornata " ) .