Sempervivum Globiferum, also known as Jovibarba Globifera, is a succulent plant that forms hemispherical rosettes of green leaves, usually with reddish-brown tips. Rosette leaves are fleshy, spatulate, curved, with an entire margin, while stem leaves are ovate.
Flowers are star-shaped, pale greenish-yellow or yellow, up to 1cm across, and appear in summer on up to 20cm tall stalks. It produces small, globe-shaped offsets that are lightly attached and easily pop off and roll away from the mother plant.
Source: World of Succulents