The hybridization in Canarian dendroid spurges belonging to Euphorbia subsect. Pachycladae is discussed. Natural hybrids accepted to date are nomenclaturally typified, two new hybrids, E. ×marreroi (E. regis-jubae × E. aphylla) in Gran Canaria and E. xfernandez-lopezii (E. bourgeana × E. berthelotii) in La Gomera, are described, and all hybrids and their parents are morphologically characterised and compared.