Mexican Feather Grass (Nassella tenuissima) is incredibly drought tolerant. I found this little patch growing in essentially zero soil, in between the cracks in the sidewalk. And during the summer, even if it rains a bit, these plants will barely be able to absorb much water. Clearly they can handle droughts with ease. I also just love the look of them wafting in the breeze.
If you are trying to add some drought tolerant plants to your garden that have style and finesse, Mexican Feather Grass should be high on your list.
I hope you enjoy!