Senecio is a genus of more than 1000 kinds of annuals, biennials, herbaceous perennials, climbers, shrubs, and little trees, a number of the succulent. Senecio is a genus of over 1000 kinds of annuals, biennials, herbaceous perennials, climbers, shrubs, and small shrubs, several of the succulent. It offers the Cinerarias, many succulents, as well as the Ivy-like climbers. At first glance, the two German Ivy and Cape Ivy may be wrongly recognized as one of several True Ivies.