[Wikipedia] South Africa native, Invasive weed: Dipogon lignosus has a native range that covers the Western Cape and Eastern Cape in South Africa where it prefers milder areas where it is not subjected to frost.[4] It is an invasive weed in Australia[5] and New Zealand[6] and in some areas control of D. lignosus can be mandated.[7] (link added by Mary Ann Machi)

[Cal-IPC] Invasive: Dipogon lignosus (Cape sweet pea) is a perennial vine (family Fabaceae) with pink flowers and broad triangular leaves found in the southwestern ranges of California. It is native to South Africa. It favors forests, woodlands, and riparian and bottomland habitat. It spreads via seeds and rhizomes. Seeds are dispersed via birds, water and possibly ants. Cal-IPC Rating: Watch (link added by Mary Ann Machi)