Another Ad from Pistil:
Digger's Speedwell- Veronica (Parahebe) perfoliata. From Australia, listed as hardy to Zone 7 but I see in some places it survives colder weather. This perennial or woody subshrub is great for Mediterranean climates. It has interesting gray-green perfoliate leaves, sort of like a Eucalyptus. Mine is rather lax and floppy, I see others in Seattle that are upright, it may be a bit of lack of sun, plus the clay soil I have. I could not care less, I have it at the front of the border and it flops over the edge so I can see the pretty leaves and flowers. Used around here as a filler plant. Extremely drought tolerant, as expected for an Australian plant. Mine has flowers that are a rather intense violet, some of the photos I see on line look more like a faded lavender. Mine stays in bloom a very long time. Here are some photos and some links, I have none of the entire plant.
http://www.greatplantpicks.org...
edited to add the common name Digger's Speedwell so you can find it in the list!