Answer: I'll bet it's Dymondia margaretae! This groundcover is native to South Africa and forms a tight mat 2-3 inches high. The narrow evergreen leaves are 2-3 inches long, deep grayish green above, and rolled in at the edges to show cottony white undersides. It flowers in the summer and the small daisy-like flowers are half-buried in the foliage. It takes drought, heat, and light foot traffic.
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