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Euphorbia trigona, the African milk tree, [1] cathedral cactus, [1] or Abyssinian euphorbia, [2] is a species of flowering plant that originates from Central Africa.Somewhat common in cultivation as a houseplant or as a hedge, the species is one of the euphorbias with succulent stems and branches as an adaptation to arid climates.
Acanthocereus tetragonus is a tall, columnar cactus that reaches a height of 2–7 m (6.6–23.0 ft). Stems are dark green, have three to five angles, and are 6–8 cm (2.4–3.1 in) in diameter.
Cereus repandus (syn. Cereus peruvianus), the Peruvian apple cactus, is a large, erect, spiny columnar cactus found in South America.It is also known as giant club cactus, hedge cactus, cadushi (in Papiamento and Wayuunaiki [2]), and kayush.
A cactus (pl.: cacti, cactuses, or less commonly, cactus) [3] is a member of the plant family Cactaceae (/ k æ k ˈ t eɪ s i. iː,-ˌ aɪ /), [a] a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. [4]
An orchid kept as a houseplant on an indoor windowsill. A houseplant, sometimes known as a pot plant, potted plant, or an indoor plant, is an ornamental plant that is grown indoors. [1]
Mammillaria is one of the largest genera in the cactus family (), with currently 200 known species and varieties recognized. [2] Most of the mammillarias are native to Mexico, while some come from the Southwestern United States, the Caribbean, Colombia, Guatemala, Honduras and Venezuela. [3]
Mammillaria elongata, the gold lace cactus or ladyfinger cactus, is a species of flowering plant in the family Cactaceae, native to central Mexico. Growing to 15 cm (6 in) tall by 30 cm (12 in) wide, it consists of densely packed clusters of elongated oval stems, covered in harmless (although very sharp) yellow or brown spines, and in spring producing white or yellow flowers.
The cultivation of ornamental plants in gardening began in ancient civilizations around 2000 BC. [5] Ancient Egyptian tomb paintings of 1500 BC show physical evidence of ornamental horticulture and landscape design.