Eriogonum kennedyi

Kennedy's Buckwheat is a flat little perennial with white flowers that grows on mountain slopes from San Bernardino up onto the east slope of the Sierra Nevada mountains, north into Mono County and east into the desert mountains. Kennedy's buckwheat is great for dry, high desert gardens, mountain gardens or rock gardens in almost any climate. A very flat compact perennial even without snow. 

One of the best plants to put into those large cracks between the pavers but you'll have to trim the roots to make the root ball fit into a 3-4 inch wide hole (it's about 5-6 inches before you trim it). But you'll end up with a very drought tolerant creeping plant between your rocks and it has nice flowers.

Kennedy's Buckwheat’s silver gray foliage looks great amongst rocks mixed with Penstemon azureus, Penstemon rostriflorus, and Monardella odoratissima. The dainty white flowers turn milk chocolate color in the fall. Good high elevation butterfly plant, but will grow in most Southern California gardens into a mat that looks like a rock, until it flowers.

The little flower balls are visited by very small bees.