Maybe an Echeveria? If it is, it is not indigenous, but from Central or South America, maybe Mexico. If it is not indigenous, will you plant it? And if it is indigenous, will you plant it?
People who adhere to strict convention, comfort zone or set of imposed rules in their work and social environments sometimes display hidden individuality in their gardens. Gardeners' tastes are often not disputed at all whilst their political, business, religious and other views may well be censored by public opinion.
Look at someone's garden for the telltale signs of personal expression, showing some people escaping their social roles and obligations. In art and garden one may find the manifestations of the embedded, under-explored dimensions of the psyche!
The Echeveria genus belongs to the Crassulaceae family that comprises some well-known South African plant genera. The genus was named after a famous Mexican botanical artist named Echeverria, complicating the spelling of the genus name forever (http://www.glenhirstcactiandpalms.co.uk/echeverias.html).