Euphorbia
Euphorbia' is genus of 2008 plant species. It is one of the biggest genuses in the plant kingdom. Common names include poinsettia, spurge, or just euphorbia. Spurges can be poisonous if swallowed. The Euphorbia family is in the group 'Malpighiales', one of the largest groups in the plant kingdoms. Euphorbia is very large, the only genus that is larger is 'Senecio', in the 'Compositae'. Euphorbias are commonly plants that do not need a lot of water, like cacti. Pointsettias are commonly called Christmas flowers. There are  many smaller genuses in euphorbia.