About Euphorbia lamarckii Sweet
Euphorbia lamarckii Sweet closely resembles Euphorbia regis-jubae, and the distributions of these two species do not overlap. It is a shrub that can grow up to 2 m (7 ft) tall. It has light brown stems, undivided leaves, and small yellowish-green floral bracts. Its inflorescence is usually a compound umbel. The elaiosome (caruncle) attached to its seed is either sessile or has only a very short stalk. It can be distinguished from other Canary Island Euphorbia species by the shape of its compound, umbel-like yellow-greenish inflorescences, and by the fact that its floral bracts fall off before the fruit ripens. Euphorbia lamarckii is native to the western Canary Islands: Tenerife, north-west La Gomera, La Palma and El Hierro. Euphorbia regis-jubae, the species it resembles, is found in the eastern Canary Islands: Gran Canaria, Lanzarote and Fuerteventura, so their ranges do not overlap.
