Aeonium arboreum, the tree aeonium,tree houseleek, or Irish rose, is a succulent, subtropical subshrub in the flowering plant family Crassulaceae.Their leaves are in flattened rosettes flattered at the end of the stem axes together. The obovate to oblate lanceolate leaf blade is pointed toward its apex and wedge-shaped at the base. The green, usually purple-colored, glossy leaf surface is almost bare. The leaf margin is set with curved eyelashes.
The conical to ovate inflorescence has flowers sit on a 2-to-12-millimetre-long, slightly fluffy flower stem. Its sepals are also slightly fluff-haired with a pointed top and wedge-shaped base that is smooth and shiny green, red or purple. The yellow, narrow oblong to lanceolate, pointed petals . The stamens are bare. It bears rosettes of leaves and large pyramidal panicles of bright yellow flowers in the spring.
The plant is endemic to the western Canary Islands of Tenerife, La Palma, El Hierro, La Gomera and Gran Canaria. The populations found on the Iberian Peninsula, the Moroccan coast and the Mediterranean are likely to be considered neophytes.
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