Pandorea jasminoides

I don't know if it's a wild plant but it attracted my attention by its unusual flowers. I only saw it once in Southern California and it makes a good decorative plant in spite of its weird looks. The flowers are supposed to smell like jasmine but I haven't sniffed them. (It's just I often observed that when so-and-so plant is supposed to smell like this or that it's hardly ever a case.) The flowers are rather big, white with a dark purple middle. The leaves are smooth. This plant is related to trumpet-vine.

Pandorea jasminoides bush

Pandorea jasminoides flowers