Owl's-clover (Castilleja densiflora ssp. densiflora) is the prominent pink flower. California plantain (Plantago erecta), the food of the Bay checkerspot butterfly, are the modest white flowers growing abundantly, especially in the foreground. Blue dicks (Dichelostemma capitatum ssp capitatum) is the single blue flower just right of center. Trail 15, 4/2/2016, 8:21 am.