Curio rowleyanus

Curio rowleyanus, syn. Senecio rowleyanus, is a flowering plant in the daisy family Asteraceae. It is a creeping, perennial, succulent vine native to the Cape Provinces of South Africa. In its natural environment its stems trail on the ground, rooting where they touch and form dense mats. It often avoids direct sunlight by growing in the shade of other plants and rocks. It is commonly known as string-of-pearls or string-of-beads. "String-of-beads" and several other common names are shared with Curio herreanus (string of watermelons), which has teardrop-shaped leaves, rather than spherical....read more on Wikipedia.