Foliage Follow Up/New Acquisition/Thank You Linda!
I've been looking and hoping to find this plant, or one similar, and there it was, waiting for me. Leucophyllum candidum 'Thunder Cloud'. Leucophyllum frutescens is the one I've been seeing. 'Thunder Cloud' has violet rather than the pink flowers of L. frutescens, and is said to be a more compact grower. The foliage is also more distinctive. It is also said to be prone to rot: beauty has its price. I'm hoping the light soil and sharp drainage here will compensate.
I love silver foliage!
See Digging for more fabulous September foliage.
Update: Tuesday, the dregs of tropical storm Linda met up with a cold front pushing in from the gulf of Alaska, and gave us over and inch and a half (38 mm) of rain! Thank you Linda!
Further update: 10/8/2015. I'm wondering if my Leucophyllum is really L. zygophyllum 'Cimmaron', due to the distinctly cupped foliage, which is how that species is described.