Aeonium arboreum

Aeonium arboreum

Aeonium arboreum is a species of the genus Aeonium in the family Crassulaceae ( Crassulaceae ). It is endemic to the Canary Islands and its varieties are used as ornamental plants.

Description

Aeonium arboreum grows as little branching shrub, reaching heights of growth of up to 2 meters. The more or less erect or ascending, smooth, non reticulate patterned shoot axes have a diameter 1-3 cm.

Their leaves are borne in flattened rosettes with diameters 10 to 25 inches at the end of the stem axis. Young leaves are closely pressed together. The inverted - ovate to lanceolate leaf blade upside is pointed to its tip and wedge-shaped at the base. It is 5 to 15 inches long, 1 to 4.5 inches wide and 1.5 to 3 millimeters thick. The green, mostly purple panschierte, glossy leaf surface is nearly bare. The leaf margin is busy with curved eyelashes.

The tapered to ovoid inflorescence has a length of 10 to 25 centimeters and a diameter of 10 to 15 centimeters. The peduncle is 5-20 inches long. The nine-to elfzähligen flowers sit at a 2 to 12 millimeters long, slightly downy hairy flower stalk. Their sepals are also weakly pubescent. The yellow, narrowly oblong to lanceolate, pointed petals are 5-7 mm long and 1.5 to 2 millimeters wide. The stamens are bald.

Systematics and distribution

Aeonium arboreum is common in the Canary Islands at altitudes between 200 and 1500 meters. In the Mediterranean region, the species occurs as a neophyte.

The first description was in 1753 as Sempervivum arboreum by Carl Linnaeus in Species Plantarum. Philip Barker Webb and Sabin Berthelot set the style in the 1840 of them newly established genus Aeonium.

We distinguish the following varieties:

  • Aeonium arboreum var arboreum
  • Aeonium arboreum var holochrysum HYLiu: The inflorescence is ovoid or conical, and 7 to 30 inches long. The flower stalk is nearly bare, the sepals glabrous and yellow petals.
  • Aeonium arboreum var rubrolineatum ( Svent. ) HYLiu: The inflorescence is hemispherical to ovoid and 8 to 15 inches long. The flower stalk is nearly bare, the sepals striped bare and the petals pretty pale yellow and usually reddish.

There are known numerous cultivars, such as:

  • Aeonium arboreum ' Zwartkop '
  • Aeonium arboreum f foliis purpureis
  • Aeonium arboreum f foliis variegatis
  • Aeonium arboreum var albivariegatum
  • Aeonium arboreum var atropurpureum
  • Aeonium arboreum var luteovariegatum
  • Aeonium arboreum var variegatum

Evidence

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